30320318 has 12 divisors (see below), whose sum is σ = 52906032. Its totient is φ = 12994380.

The previous prime is 30320317. The next prime is 30320359. The reversal of 30320318 is 81302303.

It is a super-2 number, since 2×30320318² = 1838643367242248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30320318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30320317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 154598 + ... + 154793.

It is an arithmetic number, because the mean of its divisors is an integer number (4408836).

Almost surely, 2^30320318 is an apocalyptic number.

30320318 is a deficient number, since it is larger than the sum of its proper divisors (22585714).

30320318 is a wasteful number, since it uses less digits than its factorization.

30320318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309407 (or 309400 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30320318 is about 5506.3888347991. The cubic root of 30320318 is about 311.8252294799.

The spelling of 30320318 in words is "thirty million, three hundred twenty thousand, three hundred eighteen".