31640444316744 has 16 divisors (see below), whose sum is σ = 79101110791920. Its totient is φ = 10546814772240.

The previous prime is 31640444316743. The next prime is 31640444316757. The reversal of 31640444316744 is 44761344404613.

It is a super-2 number, since 2×31640444316744² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31640444316743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659175923242 + ... + 659175923289.

It is an arithmetic number, because the mean of its divisors is an integer number (4943819424495).

Almost surely, 2^{31640444316744} is an apocalyptic number.

It is an amenable number.

31640444316744 is an abundant number, since it is smaller than the sum of its proper divisors (47460666475176).

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

31640444316744 is a wasteful number, since it uses less digits than its factorization.

31640444316744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318351846540 (or 1318351846536 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 51.

The spelling of 31640444316744 in words is "thirty-one trillion, six hundred forty billion, four hundred forty-four million, three hundred sixteen thousand, seven hundred forty-four".