30573091931 has 2 divisors, whose sum is σ = 30573091932. Its totient is φ = 30573091930.

The previous prime is 30573091867. The next prime is 30573091949. The reversal of 30573091931 is 13919037503.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30573091931 - 2⁶ = 30573091867 is a prime.

It is a super-2 number, since 2×30573091931² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (30573091951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15286545965 + 15286545966.

It is an arithmetic number, because the mean of its divisors is an integer number (15286545966).

Almost surely, 2^30573091931 is an apocalyptic number.

30573091931 is a deficient number, since it is larger than the sum of its proper divisors (1).

30573091931 is an equidigital number, since it uses as much as digits as its factorization.

30573091931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76545, while the sum is 41.

The spelling of 30573091931 in words is "thirty billion, five hundred seventy-three million, ninety-one thousand, nine hundred thirty-one".