31712510653 has 4 divisors (see below), whose sum is σ = 33091315488. Its totient is φ = 30333705820.

The previous prime is 31712510639. The next prime is 31712510693. The reversal of 31712510653 is 35601521713.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31712510653 - 2¹³ = 31712502461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31712510623) 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, 689402383 + ... + 689402428.

It is an arithmetic number, because the mean of its divisors is an integer number (8272828872).

Almost surely, 2^31712510653 is an apocalyptic number.

It is an amenable number.

31712510653 is a deficient number, since it is larger than the sum of its proper divisors (1378804835).

31712510653 is a wasteful number, since it uses less digits than its factorization.

31712510653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378804834.

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 31712510653 in words is "thirty-one billion, seven hundred twelve million, five hundred ten thousand, six hundred fifty-three".