30916931 has 6 divisors (see below), whose sum is σ = 32842860. Its totient is φ = 29098016.

The previous prime is 30916903. The next prime is 30916937. The reversal of 30916931 is 13961903.

It is not a de Polignac number, because 30916931 - 2¹⁴ = 30900547 is a prime.

It is a super-2 number, since 2×30916931² = 1911713244917522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30916937) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 53201 + ... + 53778.

It is an arithmetic number, because the mean of its divisors is an integer number (5473810).

Almost surely, 2^30916931 is an apocalyptic number.

30916931 is a deficient number, since it is larger than the sum of its proper divisors (1925929).

30916931 is a wasteful number, since it uses less digits than its factorization.

30916931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107013 (or 106996 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 30916931 is about 5560.2995422909. The cubic root of 30916931 is about 313.8572213868.

The spelling of 30916931 in words is "thirty million, nine hundred sixteen thousand, nine hundred thirty-one".