31580399424 has 112 divisors (see below), whose sum is σ = 97525075968. Its totient is φ = 8830975488.

The previous prime is 31580399419. The next prime is 31580399441. The reversal of 31580399424 is 42499308513.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186804 + ... + 313139.

Almost surely, 2^31580399424 is an apocalyptic number.

It is an amenable number.

31580399424 is an abundant number, since it is smaller than the sum of its proper divisors (65944676544).

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

31580399424 is a wasteful number, since it uses less digits than its factorization.

31580399424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500012 (or 500002 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 31580399424 in words is "thirty-one billion, five hundred eighty million, three hundred ninety-nine thousand, four hundred twenty-four".