31302031012 has 24 divisors (see below), whose sum is σ = 63158086656. Its totient is φ = 13296436608.

The previous prime is 31302031009. The next prime is 31302031021. The reversal of 31302031012 is 21013020313.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4943428 + ... + 4949755.

It is an arithmetic number, because the mean of its divisors is an integer number (2631586944).

Almost surely, 2^31302031012 is an apocalyptic number.

It is an amenable number.

31302031012 is an abundant number, since it is smaller than the sum of its proper divisors (31856055644).

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

31302031012 is a wasteful number, since it uses less digits than its factorization.

31302031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9893307 (or 9893305 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31302031012 its reverse (21013020313), we get a palindrome (52315051325).

The spelling of 31302031012 in words is "thirty-one billion, three hundred two million, thirty-one thousand, twelve".