111012002031 has 48 divisors (see below), whose sum is σ = 178752666624. Its totient is φ = 60022772928.

The previous prime is 111012002027. The next prime is 111012002089. The reversal of 111012002031 is 130200210111.

It is not a de Polignac number, because 111012002031 - 2² = 111012002027 is a prime.

It is a super-2 number, since 2×111012002031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111012001998 and 111012002016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012002011) 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, 6458010 + ... + 6475176.

It is an arithmetic number, because the mean of its divisors is an integer number (3724013888).

Almost surely, 2^111012002031 is an apocalyptic number.

111012002031 is a deficient number, since it is larger than the sum of its proper divisors (67740664593).

111012002031 is a wasteful number, since it uses less digits than its factorization.

111012002031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18068 (or 18049 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 111012002031 its reverse (130200210111), we get a palindrome (241212212142).

The spelling of 111012002031 in words is "one hundred eleven billion, twelve million, two thousand, thirty-one".