30971152 has 40 divisors (see below), whose sum is σ = 61621056. Its totient is φ = 15075456.

The previous prime is 30971147. The next prime is 30971177. The reversal of 30971152 is 25117903.

It is a self number, because there is not a number n which added to its sum of digits gives 30971152.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178938 + ... + 179110.

Almost surely, 2^30971152 is an apocalyptic number.

It is an amenable number.

30971152 is a deficient number, since it is larger than the sum of its proper divisors (30649904).

30971152 is a wasteful number, since it uses less digits than its factorization.

30971152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 409 counting only the distinct ones).

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

The square root of 30971152 is about 5565.1731329762. The cubic root of 30971152 is about 314.0405913960.

The spelling of 30971152 in words is "thirty million, nine hundred seventy-one thousand, one hundred fifty-two".