31660577212 has 48 divisors (see below), whose sum is σ = 62279699328. Its totient is φ = 13956390720.

The previous prime is 31660577183. The next prime is 31660577237. The reversal of 31660577212 is 21277506613.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468123 + ... + 531469.

It is an arithmetic number, because the mean of its divisors is an integer number (1297493736).

Almost surely, 2^31660577212 is an apocalyptic number.

It is an amenable number.

31660577212 is a deficient number, since it is larger than the sum of its proper divisors (30619122116).

31660577212 is a wasteful number, since it uses less digits than its factorization.

31660577212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63706 (or 63704 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 31660577212 in words is "thirty-one billion, six hundred sixty million, five hundred seventy-seven thousand, two hundred twelve".