31102013112 has 16 divisors (see below), whose sum is σ = 77755032840. Its totient is φ = 10367337696.

The previous prime is 31102013099. The next prime is 31102013141. The reversal of 31102013112 is 21131020113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31102013091 and 31102013100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647958583 + ... + 647958630.

Almost surely, 2^31102013112 is an apocalyptic number.

It is an amenable number.

31102013112 is an abundant number, since it is smaller than the sum of its proper divisors (46653019728).

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

31102013112 is a wasteful number, since it uses less digits than its factorization.

31102013112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295917222 (or 1295917218 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31102013112 its reverse (21131020113), we get a palindrome (52233033225).

The spelling of 31102013112 in words is "thirty-one billion, one hundred two million, thirteen thousand, one hundred twelve".