31668301660 has 12 divisors (see below), whose sum is σ = 66503433528. Its totient is φ = 12667320656.

The previous prime is 31668301631. The next prime is 31668301703. The reversal of 31668301660 is 6610386613.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791707522 + ... + 791707561.

It is an arithmetic number, because the mean of its divisors is an integer number (5541952794).

Almost surely, 2^31668301660 is an apocalyptic number.

It is an amenable number.

31668301660 is an abundant number, since it is smaller than the sum of its proper divisors (34835131868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31668301660 is a wasteful number, since it uses less digits than its factorization.

31668301660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583415092 (or 1583415090 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 31668301660 in words is "thirty-one billion, six hundred sixty-eight million, three hundred one thousand, six hundred sixty".