31308859071 has 32 divisors (see below), whose sum is σ = 53556231680. Its totient is φ = 17706325248.

The previous prime is 31308859067. The next prime is 31308859093. The reversal of 31308859071 is 17095880313.

It is not a de Polignac number, because 31308859071 - 2² = 31308859067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31308859061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 835561 + ... + 872226.

It is an arithmetic number, because the mean of its divisors is an integer number (1673632240).

Almost surely, 2^31308859071 is an apocalyptic number.

31308859071 is a deficient number, since it is larger than the sum of its proper divisors (22247372609).

31308859071 is a wasteful number, since it uses less digits than its factorization.

31308859071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707900 (or 1707894 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 31308859071 in words is "thirty-one billion, three hundred eight million, eight hundred fifty-nine thousand, seventy-one".