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31003101212130 = 2325353047975731
BaseRepresentation
bin1110000110010011110001…
…10101011010110111100010
311001202212102102121002020200
413003021320311122313202
513030423322402242010
6145534343355250030
76346620515122065
oct703117065326742
9131685372532220
1031003101212130
119973383426583
123588737a49916
13143b770068748
147927b56248dc
1538b6dd927cc0
hex1c3278d5ade2

31003101212130 has 48 divisors (see below), whose sum is σ = 80608374085824. Its totient is φ = 8267461765920.

The previous prime is 31003101212107. The next prime is 31003101212143. The reversal of 31003101212130 is 3121210130013.

31003101212130 is a `hidden beast` number, since 3 + 10 + 0 + 310 + 1 + 212 + 130 = 666.

It is a super-2 number, since 2×310031012121302 (a number of 28 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31286365 + ... + 32262095.

It is an arithmetic number, because the mean of its divisors is an integer number (1679341126788).

Almost surely, 231003101212130 is an apocalyptic number.

31003101212130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31003101212130 is an abundant number, since it is smaller than the sum of its proper divisors (49605272873694).

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

31003101212130 is a wasteful number, since it uses less digits than its factorization.

31003101212130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328791 (or 1328788 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31003101212130 its reverse (3121210130013), we get a palindrome (34124311342143).

The spelling of 31003101212130 in words is "thirty-one trillion, three billion, one hundred one million, two hundred twelve thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 353047 706094 975731 1059141 1765235 1951462 2118282 2927193 3177423 3530470 4878655 5295705 5854386 6354846 8781579 9757310 10591410 14635965 15887115 17563158 29271930 31774230 43907895 87815790 344478902357 688957804714 1033436707071 1722394511785 2066873414142 3100310121213 3444789023570 5167183535355 6200620242426 10334367070710 15501550606065 31003101212130