31010112312 has 16 divisors (see below), whose sum is σ = 77525280840. Its totient is φ = 10336704096.

The previous prime is 31010112311. The next prime is 31010112347. The reversal of 31010112312 is 21321101013.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31010112291 and 31010112300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010112311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646043983 + ... + 646044030.

Almost surely, 2^31010112312 is an apocalyptic number.

It is an amenable number.

31010112312 is an abundant number, since it is smaller than the sum of its proper divisors (46515168528).

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

31010112312 is a wasteful number, since it uses less digits than its factorization.

31010112312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292088022 (or 1292088018 counting only the distinct ones).

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

Adding to 31010112312 its reverse (21321101013), we get a palindrome (52331213325).

The spelling of 31010112312 in words is "thirty-one billion, ten million, one hundred twelve thousand, three hundred twelve".