30813265 has 16 divisors (see below), whose sum is σ = 44744832. Its totient is φ = 19885824.

The previous prime is 30813221. The next prime is 30813271. The reversal of 30813265 is 56231803.

It is not a de Polignac number, because 30813265 - 2⁷ = 30813137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25299 + ... + 26488.

It is an arithmetic number, because the mean of its divisors is an integer number (2796552).

Almost surely, 2^30813265 is an apocalyptic number.

30813265 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30813265 is a deficient number, since it is larger than the sum of its proper divisors (13931567).

30813265 is a wasteful number, since it uses less digits than its factorization.

30813265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51816.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 30813265 is about 5550.9697351003. The cubic root of 30813265 is about 313.5060356464.

The spelling of 30813265 in words is "thirty million, eight hundred thirteen thousand, two hundred sixty-five".