111310111031 has 12 divisors (see below), whose sum is σ = 129639429720. Its totient is φ = 95293542960.

The previous prime is 111310111027. The next prime is 111310111051. The reversal of 111310111031 is 130111013111.

It is not a de Polignac number, because 111310111031 - 2² = 111310111027 is a prime.

It is a super-2 number, since 2×111310111031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111310110997 and 111310111015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111310111021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1329485 + ... + 1410726.

It is an arithmetic number, because the mean of its divisors is an integer number (10803285810).

Almost surely, 2^111310111031 is an apocalyptic number.

111310111031 is a deficient number, since it is larger than the sum of its proper divisors (18329318689).

111310111031 is an equidigital number, since it uses as much as digits as its factorization.

111310111031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741054 (or 2741047 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 14.

Adding to 111310111031 its reverse (130111013111), we get a palindrome (241421124142).

The spelling of 111310111031 in words is "one hundred eleven billion, three hundred ten million, one hundred eleven thousand, thirty-one".