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30231131212230 = 2351377515721057
BaseRepresentation
bin1101101111110101110111…
…10101100100100111000110
310222001001211111211212210220
412313322323311210213012
512430301324042242410
6144143553455125210
76240061420313004
oct667727365444706
9128031744755726
1030231131212230
1196a5a50499823
123482bb4813806
1313b3a252b1b60
147672a1c1ba74
153765ab326070
hex1b7ebbd649c6

30231131212230 has 32 divisors (see below), whose sum is σ = 78135846826464. Its totient is φ = 7441509221376.

The previous prime is 30231131212213. The next prime is 30231131212231. The reversal of 30231131212230 is 3221213113203.

It is a self number, because there is not a number n which added to its sum of digits gives 30231131212230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231131212231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38757860139 + ... + 38757860918.

It is an arithmetic number, because the mean of its divisors is an integer number (2441745213327).

Almost surely, 230231131212230 is an apocalyptic number.

30231131212230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30231131212230 is an abundant number, since it is smaller than the sum of its proper divisors (47904715614234).

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

30231131212230 is a wasteful number, since it uses less digits than its factorization.

30231131212230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77515721080.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 30231131212230 its reverse (3221213113203), we get a palindrome (33452344325433).

The spelling of 30231131212230 in words is "thirty trillion, two hundred thirty-one billion, one hundred thirty-one million, two hundred twelve thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 77515721057 155031442114 232547163171 387578605285 465094326342 775157210570 1007704373741 1162735815855 2015408747482 2325471631710 3023113121223 5038521868705 6046226242446 10077043737410 15115565606115 30231131212230