31880685573 has 48 divisors (see below), whose sum is σ = 51472392192. Its totient is φ = 18848868000.

The previous prime is 31880685547. The next prime is 31880685601. The reversal of 31880685573 is 37558608813.

31880685573 is a `hidden beast` number, since 3 + 1 + 8 + 8 + 0 + 68 + 5 + 573 = 666.

It is not a de Polignac number, because 31880685573 - 2⁹ = 31880685061 is a prime.

It is a super-2 number, since 2×31880685573² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31880685673) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1436068 + ... + 1458098.

It is an arithmetic number, because the mean of its divisors is an integer number (1072341504).

Almost surely, 2^31880685573 is an apocalyptic number.

31880685573 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31880685573 is a deficient number, since it is larger than the sum of its proper divisors (19591706619).

31880685573 is a wasteful number, since it uses less digits than its factorization.

31880685573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22406 (or 22403 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 31880685573 in words is "thirty-one billion, eight hundred eighty million, six hundred eighty-five thousand, five hundred seventy-three".