31980573 has 12 divisors (see below), whose sum is σ = 46644000. Its totient is φ = 21112776.

The previous prime is 31980551. The next prime is 31980577. The reversal of 31980573 is 37508913.

31980573 is a `hidden beast` number, since 3 + 1 + 9 + 80 + 573 = 666.

It is not a de Polignac number, because 31980573 - 2⁵ = 31980541 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31980577) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 16323 + ... + 18176.

It is an arithmetic number, because the mean of its divisors is an integer number (3887000).

Almost surely, 2^31980573 is an apocalyptic number.

It is an amenable number.

31980573 is a deficient number, since it is larger than the sum of its proper divisors (14663427).

31980573 is a wasteful number, since it uses less digits than its factorization.

31980573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34608 (or 34605 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 31980573 is about 5655.1368683702. The cubic root of 31980573 is about 317.4159506375.

The spelling of 31980573 in words is "thirty-one million, nine hundred eighty thousand, five hundred seventy-three".