30320013 has 4 divisors (see below), whose sum is σ = 40426688. Its totient is φ = 20213340.

The previous prime is 30320009. The next prime is 30320021. The reversal of 30320013 is 31002303.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30320013 - 2² = 30320009 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 (30320023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5053333 + ... + 5053338.

It is an arithmetic number, because the mean of its divisors is an integer number (10106672).

Almost surely, 2^30320013 is an apocalyptic number.

It is an amenable number.

30320013 is a deficient number, since it is larger than the sum of its proper divisors (10106675).

30320013 is a wasteful number, since it uses less digits than its factorization.

30320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106674.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 30320013 is about 5506.3611396275. The cubic root of 30320013 is about 311.8241838992.

Adding to 30320013 its reverse (31002303), we get a palindrome (61322316).

The spelling of 30320013 in words is "thirty million, three hundred twenty thousand, thirteen".