31074018813 has 6 divisors (see below), whose sum is σ = 44884693854. Its totient is φ = 20716012536.

The previous prime is 31074018797. The next prime is 31074018883. The reversal of 31074018813 is 31881047013.

It can be written as a sum of positive squares in only one way, i.e., 28996300089 + 2077718724 = 170283^2 + 45582^2 .

It is not a de Polignac number, because 31074018813 - 2⁴ = 31074018797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31074018883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1726334370 + ... + 1726334387.

It is an arithmetic number, because the mean of its divisors is an integer number (7480782309).

Almost surely, 2^31074018813 is an apocalyptic number.

It is an amenable number.

31074018813 is a deficient number, since it is larger than the sum of its proper divisors (13810675041).

31074018813 is a wasteful number, since it uses less digits than its factorization.

31074018813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452668763 (or 3452668760 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 31074018813 in words is "thirty-one billion, seventy-four million, eighteen thousand, eight hundred thirteen".