30930531 has 16 divisors (see below), whose sum is σ = 44198784. Its totient is φ = 19170944.

The previous prime is 30930521. The next prime is 30930533. The reversal of 30930531 is 13503903.

It is a cyclic number.

It is not a de Polignac number, because 30930531 - 2⁹ = 30930019 is a prime.

It is a super-2 number, since 2×30930531² = 1913395495883922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30930533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580 + ... + 7886.

It is an arithmetic number, because the mean of its divisors is an integer number (2762424).

Almost surely, 2^30930531 is an apocalyptic number.

30930531 is a deficient number, since it is larger than the sum of its proper divisors (13268253).

30930531 is a wasteful number, since it uses less digits than its factorization.

30930531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7410.

The product of its (nonzero) digits is 1215, while the sum is 24.

The square root of 30930531 is about 5561.5223635260. The cubic root of 30930531 is about 313.9032353597.

The spelling of 30930531 in words is "thirty million, nine hundred thirty thousand, five hundred thirty-one".