31152980 has 12 divisors (see below), whose sum is σ = 65421300. Its totient is φ = 12461184.

The previous prime is 31152977. The next prime is 31152983. The reversal of 31152980 is 8925113.

It is an interprime number because it is at equal distance from previous prime (31152977) and next prime (31152983).

It can be written as a sum of positive squares in 2 ways, for example, as 16924996 + 14227984 = 4114^2 + 3772^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31152983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778805 + ... + 778844.

It is an arithmetic number, because the mean of its divisors is an integer number (5451775).

Almost surely, 2^31152980 is an apocalyptic number.

It is an amenable number.

31152980 is an abundant number, since it is smaller than the sum of its proper divisors (34268320).

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

31152980 is a wasteful number, since it uses less digits than its factorization.

31152980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557658 (or 1557656 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 31152980 is about 5581.4854653578. The cubic root of 31152980 is about 314.6539577801.

The spelling of 31152980 in words is "thirty-one million, one hundred fifty-two thousand, nine hundred eighty".