30925475813 has 4 divisors (see below), whose sum is σ = 31449636480. Its totient is φ = 30401315148.

The previous prime is 30925475803. The next prime is 30925475857. The reversal of 30925475813 is 31857452903.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31857452903 = 44027 ⋅723589.

It is a cyclic number.

It is not a de Polignac number, because 30925475813 - 2¹⁴ = 30925459429 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 (30925475803) 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, 262080245 + ... + 262080362.

It is an arithmetic number, because the mean of its divisors is an integer number (7862409120).

Almost surely, 2^30925475813 is an apocalyptic number.

It is an amenable number.

30925475813 is a deficient number, since it is larger than the sum of its proper divisors (524160667).

30925475813 is an equidigital number, since it uses as much as digits as its factorization.

30925475813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524160666.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 30925475813 in words is "thirty billion, nine hundred twenty-five million, four hundred seventy-five thousand, eight hundred thirteen".