30913113 has 32 divisors (see below), whose sum is σ = 51766272. Its totient is φ = 15940800.

The previous prime is 30913111. The next prime is 30913117. The reversal of 30913113 is 31131903.

It is not a de Polignac number, because 30913113 - 2¹ = 30913111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 30913113.

It is not an unprimeable number, because it can be changed into a prime (30913111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37243 + ... + 38063.

It is an arithmetic number, because the mean of its divisors is an integer number (1617696).

Almost surely, 2^30913113 is an apocalyptic number.

30913113 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

30913113 is a deficient number, since it is larger than the sum of its proper divisors (20853159).

30913113 is a wasteful number, since it uses less digits than its factorization.

30913113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005.

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 30913113 is about 5559.9562048635. The cubic root of 30913113 is about 313.8443012147.

The spelling of 30913113 in words is "thirty million, nine hundred thirteen thousand, one hundred thirteen".