31013213312009 has 24 divisors (see below), whose sum is σ = 32459075046720. Its totient is φ = 29629294767072.

The previous prime is 31013213311999. The next prime is 31013213312027. The reversal of 31013213312009 is 90021331231013.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-31013213312009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31013213312099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3251196962 + ... + 3251206500.

It is an arithmetic number, because the mean of its divisors is an integer number (1352461460280).

Almost surely, 2^{31013213312009} is an apocalyptic number.

It is an amenable number.

31013213312009 is a deficient number, since it is larger than the sum of its proper divisors (1445861734711).

31013213312009 is a wasteful number, since it uses less digits than its factorization.

31013213312009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16301 (or 16278 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

The spelling of 31013213312009 in words is "thirty-one trillion, thirteen billion, two hundred thirteen million, three hundred twelve thousand, nine".