31970152 has 16 divisors (see below), whose sum is σ = 61220160. Its totient is φ = 15644784.

The previous prime is 31970143. The next prime is 31970167. The reversal of 31970152 is 25107913.

It is a self number, because there is not a number n which added to its sum of digits gives 31970152.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42138 + ... + 42889.

It is an arithmetic number, because the mean of its divisors is an integer number (3826260).

Almost surely, 2^31970152 is an apocalyptic number.

It is an amenable number.

31970152 is a deficient number, since it is larger than the sum of its proper divisors (29250008).

31970152 is a wasteful number, since it uses less digits than its factorization.

31970152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85080 (or 85076 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 31970152 is about 5654.2154186058. The cubic root of 31970152 is about 317.3814697984.

The spelling of 31970152 in words is "thirty-one million, nine hundred seventy thousand, one hundred fifty-two".