111000123931 has 2 divisors, whose sum is σ = 111000123932. Its totient is φ = 111000123930.

The previous prime is 111000123779. The next prime is 111000123937. The reversal of 111000123931 is 139321000111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111000123931 is a prime.

It is a super-2 number, since 2×111000123931² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111000123937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500061965 + 55500061966.

It is an arithmetic number, because the mean of its divisors is an integer number (55500061966).

Almost surely, 2^111000123931 is an apocalyptic number.

111000123931 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000123931 is an equidigital number, since it uses as much as digits as its factorization.

111000123931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 111000123931 in words is "one hundred eleven billion, one hundred twenty-three thousand, nine hundred thirty-one".