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231000012103231 = 7239946991442429
BaseRepresentation
bin110100100001011111100001…
…101010100001111000111111
31010021220101102000112011001101
4310201133201222201320333
5220234201011044300411
62135143535054353531
766441125433442330
oct6441374152417077
91107811360464041
10231000012103231
1167670611746668
1221aa94247bb8a7
139bb8291343927
144108662c88287
151ba8c916c08c1
hexd217e1aa1e3f

231000012103231 has 16 divisors (see below), whose sum is σ = 275478743232000. Its totient is φ = 189390992570208.

The previous prime is 231000012103129. The next prime is 231000012103297. The reversal of 231000012103231 is 132301210000132.

It is a cyclic number.

It is not a de Polignac number, because 231000012103231 - 29 = 231000012102719 is a prime.

It is a super-2 number, since 2×2310000121032312 (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231000012103199 and 231000012103208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231000012103831) 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, 159425325 + ... + 160867753.

It is an arithmetic number, because the mean of its divisors is an integer number (17217421452000).

Almost surely, 2231000012103231 is an apocalyptic number.

231000012103231 is a deficient number, since it is larger than the sum of its proper divisors (44478731128769).

231000012103231 is a wasteful number, since it uses less digits than its factorization.

231000012103231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437158.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 231000012103231 its reverse (132301210000132), we get a palindrome (363301222103363).

The spelling of 231000012103231 in words is "two hundred thirty-one trillion, twelve million, one hundred three thousand, two hundred thirty-one".

Divisors: 1 7 23 161 994699 1442429 6962893 10097003 22878077 33175867 160146539 232231069 1434782683871 10043478787097 33000001729033 231000012103231