30313818 has 16 divisors (see below), whose sum is σ = 67364160. Its totient is φ = 10104588.

The previous prime is 30313817. The next prime is 30313823. The reversal of 30313818 is 81831303.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 30313791 and 30313800.

It is not an unprimeable number, because it can be changed into a prime (30313817) 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, 280630 + ... + 280737.

It is an arithmetic number, because the mean of its divisors is an integer number (4210260).

Almost surely, 2^30313818 is an apocalyptic number.

30313818 is an abundant number, since it is smaller than the sum of its proper divisors (37050342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30313818 is a wasteful number, since it uses less digits than its factorization.

30313818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561378 (or 561372 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 30313818 is about 5505.7985796794. The cubic root of 30313818 is about 311.8029450957.

The spelling of 30313818 in words is "thirty million, three hundred thirteen thousand, eight hundred eighteen".