30442931 has 8 divisors (see below), whose sum is σ = 30768864. Its totient is φ = 30119040.

The previous prime is 30442927. The next prime is 30442943. The reversal of 30442931 is 13924403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30442931 - 2² = 30442927 is a prime.

It is a super-2 number, since 2×30442931² = 1853544095741522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30442931.

It is not an unprimeable number, because it can be changed into a prime (30442901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70091 + ... + 70523.

It is an arithmetic number, because the mean of its divisors is an integer number (3846108).

Almost surely, 2^30442931 is an apocalyptic number.

30442931 is a deficient number, since it is larger than the sum of its proper divisors (325933).

30442931 is a wasteful number, since it uses less digits than its factorization.

30442931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 30442931 is about 5517.5113049272. The cubic root of 30442931 is about 312.2449964508.

The spelling of 30442931 in words is "thirty million, four hundred forty-two thousand, nine hundred thirty-one".