31660609104 has 80 divisors (see below), whose sum is σ = 91814679040. Its totient is φ = 10444723200.

The previous prime is 31660609081. The next prime is 31660609111. The reversal of 31660609104 is 40190606613.

31660609104 is a `hidden beast` number, since 31 + 6 + 6 + 0 + 609 + 10 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335872 + ... + 419679.

It is an arithmetic number, because the mean of its divisors is an integer number (1147683488).

Almost surely, 2^31660609104 is an apocalyptic number.

It is an amenable number.

31660609104 is an abundant number, since it is smaller than the sum of its proper divisors (60154069936).

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

31660609104 is a wasteful number, since it uses less digits than its factorization.

31660609104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755665 (or 755653 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 31660609104 in words is "thirty-one billion, six hundred sixty million, six hundred nine thousand, one hundred four".