30232813 has 8 divisors (see below), whose sum is σ = 32602808. Its totient is φ = 27869184.

The previous prime is 30232793. The next prime is 30232837. The reversal of 30232813 is 31823203.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8076964 + 22155849 = 2842^2 + 4707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30232813 - 2²¹ = 28135661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30232883) 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, 13981 + ... + 15997.

It is an arithmetic number, because the mean of its divisors is an integer number (4075351).

Almost surely, 2^30232813 is an apocalyptic number.

It is an amenable number.

30232813 is a deficient number, since it is larger than the sum of its proper divisors (2369995).

30232813 is a wasteful number, since it uses less digits than its factorization.

30232813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30232813 is about 5498.4373234584. The cubic root of 30232813 is about 311.5249626376.

The spelling of 30232813 in words is "thirty million, two hundred thirty-two thousand, eight hundred thirteen".