31056980 has 24 divisors (see below), whose sum is σ = 65514120. Its totient is φ = 12366720.

The previous prime is 31056959. The next prime is 31056997. The reversal of 31056980 is 8965013.

It can be written as a sum of positive squares in 4 ways, for example, as 8456464 + 22600516 = 2908^2 + 4754^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190 + ... + 7970.

It is an arithmetic number, because the mean of its divisors is an integer number (2729755).

Almost surely, 2^31056980 is an apocalyptic number.

It is an amenable number.

31056980 is an abundant number, since it is smaller than the sum of its proper divisors (34457140).

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

31056980 is a wasteful number, since it uses less digits than its factorization.

31056980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7019 (or 7017 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 31056980 is about 5572.8789687198. The cubic root of 31056980 is about 314.3304161131.

The spelling of 31056980 in words is "thirty-one million, fifty-six thousand, nine hundred eighty".