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31023012102030 = 232513154317184313
BaseRepresentation
bin1110000110111000110111…
…00111011011111110001110
311001211202211001110002102100
413003130123213123332032
513031240112044231110
6145551435222535530
76351224105650554
oct703343347337616
9131752731402370
1031023012102030
119980870621893
123590573b975a6
1314405c41434c0
14793743b51bd4
1538bea6940bc0
hex1c371b9dbf8e

31023012102030 has 96 divisors (see below), whose sum is σ = 86920734753216. Its totient is φ = 7631484221952.

The previous prime is 31023012102023. The next prime is 31023012102053. The reversal of 31023012102030 is 3020121032013.

31023012102030 is a `hidden beast` number, since 3 + 102 + 301 + 210 + 20 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31023012101994 and 31023012102012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6786847 + ... + 10397466.

It is an arithmetic number, because the mean of its divisors is an integer number (905424320346).

Almost surely, 231023012102030 is an apocalyptic number.

31023012102030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31023012102030 is an abundant number, since it is smaller than the sum of its proper divisors (55897722651186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31023012102030 is a wasteful number, since it uses less digits than its factorization.

31023012102030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17185882 (or 17185879 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31023012102030 its reverse (3020121032013), we get a palindrome (34043133134043).

The spelling of 31023012102030 in words is "thirty-one trillion, twenty-three billion, twelve million, one hundred two thousand, thirty".

Divisors: 1 2 3 5 6 9 10 13 15 18 26 30 39 45 65 78 90 117 130 195 234 390 585 1170 1543 3086 4629 7715 9258 13887 15430 20059 23145 27774 40118 46290 60177 69435 100295 120354 138870 180531 200590 300885 361062 601770 902655 1805310 17184313 34368626 51552939 85921565 103105878 154658817 171843130 223396069 257764695 309317634 446792138 515529390 670188207 773294085 1116980345 1340376414 1546588170 2010564621 2233960690 3350941035 4021129242 6701882070 10052823105 20105646210 26515394959 53030789918 79546184877 132576974795 159092369754 238638554631 265153949590 344700134467 397730924385 477277109262 689400268934 795461848770 1034100403401 1193192773155 1723500672335 2068200806802 2386385546310 3102301210203 3447001344670 5170502017005 6204602420406 10341004034010 15511506051015 31023012102030