31032231312 has 40 divisors (see below), whose sum is σ = 80173799104. Its totient is φ = 10343147904.

The previous prime is 31032231301. The next prime is 31032231313. The reversal of 31032231312 is 21313223013.

It is not an unprimeable number, because it can be changed into a prime (31032231313) 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, 699093 + ... + 742155.

Almost surely, 2^31032231312 is an apocalyptic number.

It is an amenable number.

31032231312 is an abundant number, since it is smaller than the sum of its proper divisors (49141567792).

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

31032231312 is a wasteful number, since it uses less digits than its factorization.

31032231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58087 (or 58081 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31032231312 its reverse (21313223013), we get a palindrome (52345454325).

The spelling of 31032231312 in words is "thirty-one billion, thirty-two million, two hundred thirty-one thousand, three hundred twelve".