31358680690 has 64 divisors (see below), whose sum is σ = 57679776000. Its totient is φ = 12272857344.

The previous prime is 31358680679. The next prime is 31358680721. The reversal of 31358680690 is 9608685313.

It is a super-2 number, since 2×31358680690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61608156 + ... + 61608664.

It is an arithmetic number, because the mean of its divisors is an integer number (901246500).

Almost surely, 2^31358680690 is an apocalyptic number.

31358680690 is a deficient number, since it is larger than the sum of its proper divisors (26321095310).

31358680690 is a wasteful number, since it uses less digits than its factorization.

31358680690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 31358680690 in words is "thirty-one billion, three hundred fifty-eight million, six hundred eighty thousand, six hundred ninety".