30942875 has 16 divisors (see below), whose sum is σ = 39157248. Its totient is φ = 24408000.

The previous prime is 30942869. The next prime is 30942881. The reversal of 30942875 is 57824903.

It is an interprime number because it is at equal distance from previous prime (30942869) and next prime (30942881).

It is not a de Polignac number, because 30942875 - 2¹² = 30938779 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 7430 + ... + 10820.

It is an arithmetic number, because the mean of its divisors is an integer number (2447328).

Almost surely, 2^30942875 is an apocalyptic number.

30942875 is a deficient number, since it is larger than the sum of its proper divisors (8214373).

30942875 is an equidigital number, since it uses as much as digits as its factorization.

30942875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479 (or 3469 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 30942875 is about 5562.6320209052. The cubic root of 30942875 is about 313.9449881313.

The spelling of 30942875 in words is "thirty million, nine hundred forty-two thousand, eight hundred seventy-five".