30927428813 has 4 divisors (see below), whose sum is σ = 30933513600. Its totient is φ = 30921344028.

The previous prime is 30927428773. The next prime is 30927428821. The reversal of 30927428813 is 31882472903.

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 a cyclic number.

It is not a de Polignac number, because 30927428813 - 2¹⁰ = 30927427789 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 (30927424813) 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, 3034763 + ... + 3044936.

It is an arithmetic number, because the mean of its divisors is an integer number (7733378400).

Almost surely, 2^30927428813 is an apocalyptic number.

It is an amenable number.

30927428813 is a deficient number, since it is larger than the sum of its proper divisors (6084787).

30927428813 is an equidigital number, since it uses as much as digits as its factorization.

30927428813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084786.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 30927428813 in words is "thirty billion, nine hundred twenty-seven million, four hundred twenty-eight thousand, eight hundred thirteen".