30927013 has 4 divisors (see below), whose sum is σ = 33306028. Its totient is φ = 28548000.

The previous prime is 30927007. The next prime is 30927031. The reversal of 30927013 is 31072903.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3448449 + 27478564 = 1857^2 + 5242^2 .

It is not a de Polignac number, because 30927013 - 2⁵ = 30926981 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 (30927313) 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, 1189488 + ... + 1189513.

It is an arithmetic number, because the mean of its divisors is an integer number (8326507).

Almost surely, 2^30927013 is an apocalyptic number.

It is an amenable number.

30927013 is a deficient number, since it is larger than the sum of its proper divisors (2379015).

30927013 is a wasteful number, since it uses less digits than its factorization.

30927013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379014.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 30927013 is about 5561.2060742253. The cubic root of 30927013 is about 313.8913339211.

Adding to 30927013 its reverse (31072903), we get a palindrome (61999916).

The spelling of 30927013 in words is "thirty million, nine hundred twenty-seven thousand, thirteen".