31039679853 has 24 divisors (see below), whose sum is σ = 55181654528. Its totient is φ = 16372577952.

The previous prime is 31039679849. The next prime is 31039679893. The reversal of 31039679853 is 35897693013.

It is not a de Polignac number, because 31039679853 - 2² = 31039679849 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31039679853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31039679893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18948925 + ... + 18950562.

Almost surely, 2^31039679853 is an apocalyptic number.

It is an amenable number.

31039679853 is a deficient number, since it is larger than the sum of its proper divisors (24141974675).

31039679853 is a wasteful number, since it uses less digits than its factorization.

31039679853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37899513 (or 37899510 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 31039679853 in words is "thirty-one billion, thirty-nine million, six hundred seventy-nine thousand, eight hundred fifty-three".