31622980 has 24 divisors (see below), whose sum is σ = 67663512. Its totient is φ = 12410112.

The previous prime is 31622959. The next prime is 31623023. The reversal of 31622980 is 8922613.

It can be written as a sum of positive squares in 4 ways, for example, as 4769856 + 26853124 = 2184^2 + 5182^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13857 + ... + 15976.

It is an arithmetic number, because the mean of its divisors is an integer number (2819313).

Almost surely, 2^31622980 is an apocalyptic number.

It is an amenable number.

31622980 is an abundant number, since it is smaller than the sum of its proper divisors (36040532).

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

31622980 is a wasteful number, since it uses less digits than its factorization.

31622980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29895 (or 29893 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 31622980 is about 5623.4313368263. The cubic root of 31622980 is about 316.2284440098.

The spelling of 31622980 in words is "thirty-one million, six hundred twenty-two thousand, nine hundred eighty".