31013213120008 has 128 divisors (see below), whose sum is σ = 67404005867520. Its totient is φ = 13103524224000.

The previous prime is 31013213119979. The next prime is 31013213120047. The reversal of 31013213120008 is 80002131231013.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 772933435 + ... + 772973557.

It is an arithmetic number, because the mean of its divisors is an integer number (526593795840).

Almost surely, 2^{31013213120008} is an apocalyptic number.

It is an amenable number.

31013213120008 is an abundant number, since it is smaller than the sum of its proper divisors (36390792747512).

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

31013213120008 is a wasteful number, since it uses less digits than its factorization.

31013213120008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40947 (or 40943 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 31013213120008 in words is "thirty-one trillion, thirteen billion, two hundred thirteen million, one hundred twenty thousand, eight".