31601316644 has 12 divisors (see below), whose sum is σ = 55303584000. Its totient is φ = 15800292648.

The previous prime is 31601316587. The next prime is 31601316689. The reversal of 31601316644 is 44661310613.

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 3 ways as a sum of consecutive naturals, for example, 223757 + ... + 336555.

It is an arithmetic number, because the mean of its divisors is an integer number (4608632000).

Almost surely, 2^31601316644 is an apocalyptic number.

It is an amenable number.

31601316644 is a deficient number, since it is larger than the sum of its proper divisors (23702267356).

31601316644 is a wasteful number, since it uses less digits than its factorization.

31601316644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182842 (or 182840 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 31601316644 in words is "thirty-one billion, six hundred one million, three hundred sixteen thousand, six hundred forty-four".