111313020231 has 64 divisors (see below), whose sum is σ = 189178967040. Its totient is φ = 63367557120.

The previous prime is 111313020163. The next prime is 111313020281. The reversal of 111313020231 is 132020313111.

111313020231 is a `hidden beast` number, since 1 + 1 + 131 + 302 + 0 + 231 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-111313020231 is a prime.

It is a super-2 number, since 2×111313020231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111313020281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81786991 + ... + 81788351.

It is an arithmetic number, because the mean of its divisors is an integer number (2955921360).

Almost surely, 2^111313020231 is an apocalyptic number.

111313020231 is a deficient number, since it is larger than the sum of its proper divisors (77865946809).

111313020231 is a wasteful number, since it uses less digits than its factorization.

111313020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693 (or 2687 counting only the distinct ones).

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

Adding to 111313020231 its reverse (132020313111), we get a palindrome (243333333342).

The spelling of 111313020231 in words is "one hundred eleven billion, three hundred thirteen million, twenty thousand, two hundred thirty-one".