31047375013 has 8 divisors (see below), whose sum is σ = 31504452480. Its totient is φ = 30591899520.

The previous prime is 31047375001. The next prime is 31047375041. The reversal of 31047375013 is 31057374013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31047375013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31047375013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31047375313) 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 7 ways as a sum of consecutive naturals, for example, 361420 + ... + 438997.

It is an arithmetic number, because the mean of its divisors is an integer number (3938056560).

Almost surely, 2^31047375013 is an apocalyptic number.

It is an amenable number.

31047375013 is a deficient number, since it is larger than the sum of its proper divisors (457077467).

31047375013 is an equidigital number, since it uses as much as digits as its factorization.

31047375013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800987.

The product of its (nonzero) digits is 26460, while the sum is 34.

The spelling of 31047375013 in words is "thirty-one billion, forty-seven million, three hundred seventy-five thousand, thirteen".