30971425 has 12 divisors (see below), whose sum is σ = 40426480. Its totient is φ = 23472720.

The previous prime is 30971419. The next prime is 30971431. The reversal of 30971425 is 52417903.

It is an interprime number because it is at equal distance from previous prime (30971419) and next prime (30971431).

It is not a de Polignac number, because 30971425 - 2³ = 30971417 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 32127 + ... + 33076.

Almost surely, 2^30971425 is an apocalyptic number.

It is an amenable number.

30971425 is a deficient number, since it is larger than the sum of its proper divisors (9455055).

30971425 is a wasteful number, since it uses less digits than its factorization.

30971425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65232 (or 65227 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 30971425 is about 5565.1976604609. The cubic root of 30971425 is about 314.0415141130.

The spelling of 30971425 in words is "thirty million, nine hundred seventy-one thousand, four hundred twenty-five".