31112111028 has 24 divisors (see below), whose sum is σ = 72684682560. Its totient is φ = 10357881280.

The previous prime is 31112111011. The next prime is 31112111029. The reversal of 31112111028 is 82011121113.

It is a junction number, because it is equal to n+sod(n) for n = 31112110995 and 31112111013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112111029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1592688 + ... + 1612103.

It is an arithmetic number, because the mean of its divisors is an integer number (3028528440).

Almost surely, 2^31112111028 is an apocalyptic number.

It is an amenable number.

31112111028 is an abundant number, since it is smaller than the sum of its proper divisors (41572571532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31112111028 is a wasteful number, since it uses less digits than its factorization.

31112111028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205607 (or 3205605 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 21.

The spelling of 31112111028 in words is "thirty-one billion, one hundred twelve million, one hundred eleven thousand, twenty-eight".