31311307844 has 12 divisors (see below), whose sum is σ = 54881631168. Its totient is φ = 15630841800.

The previous prime is 31311307843. The next prime is 31311307861. The reversal of 31311307844 is 44870311313.

It is not an unprimeable number, because it can be changed into a prime (31311307843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6200192 + ... + 6205239.

It is an arithmetic number, because the mean of its divisors is an integer number (4573469264).

Almost surely, 2^31311307844 is an apocalyptic number.

It is an amenable number.

31311307844 is a deficient number, since it is larger than the sum of its proper divisors (23570323324).

31311307844 is a wasteful number, since it uses less digits than its factorization.

31311307844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12406066 (or 12406064 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 31311307844 in words is "thirty-one billion, three hundred eleven million, three hundred seven thousand, eight hundred forty-four".