31371311873 has 16 divisors (see below), whose sum is σ = 34740938880. Its totient is φ = 28088793600.

The previous prime is 31371311857. The next prime is 31371311903. The reversal of 31371311873 is 37811317313.

It is a cyclic number.

It is not a de Polignac number, because 31371311873 - 2⁴ = 31371311857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31371314873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758513 + ... + 798801.

It is an arithmetic number, because the mean of its divisors is an integer number (2171308680).

Almost surely, 2^31371311873 is an apocalyptic number.

It is an amenable number.

31371311873 is a deficient number, since it is larger than the sum of its proper divisors (3369627007).

31371311873 is a wasteful number, since it uses less digits than its factorization.

31371311873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41368.

The product of its digits is 31752, while the sum is 38.

The spelling of 31371311873 in words is "thirty-one billion, three hundred seventy-one million, three hundred eleven thousand, eight hundred seventy-three".