111323012031 has 48 divisors (see below), whose sum is σ = 203470096128. Its totient is φ = 56966976000.

The previous prime is 111323011999. The next prime is 111323012039. The reversal of 111323012031 is 130210323111.

It is not a de Polignac number, because 111323012031 - 2⁵ = 111323011999 is a prime.

It is a super-2 number, since 2×111323012031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111323011995 and 111323012013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111323012039) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1152370 + ... + 1245231.

It is an arithmetic number, because the mean of its divisors is an integer number (4238960336).

Almost surely, 2^111323012031 is an apocalyptic number.

111323012031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111323012031 is a deficient number, since it is larger than the sum of its proper divisors (92147084097).

111323012031 is a wasteful number, since it uses less digits than its factorization.

111323012031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397692 (or 2397689 counting only the distinct ones).

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

Adding to 111323012031 its reverse (130210323111), we get a palindrome (241533335142).

The spelling of 111323012031 in words is "one hundred eleven billion, three hundred twenty-three million, twelve thousand, thirty-one".