231520750771 has 2 divisors, whose sum is σ = 231520750772. Its totient is φ = 231520750770.

The previous prime is 231520750763. The next prime is 231520750789. The reversal of 231520750771 is 177057025132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231520750771 - 2³ = 231520750763 is a prime.

It is not a weakly prime, because it can be changed into another prime (231520750471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115760375385 + 115760375386.

It is an arithmetic number, because the mean of its divisors is an integer number (115760375386).

Almost surely, 2^231520750771 is an apocalyptic number.

231520750771 is a deficient number, since it is larger than the sum of its proper divisors (1).

231520750771 is an equidigital number, since it uses as much as digits as its factorization.

231520750771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102900, while the sum is 40.

The spelling of 231520750771 in words is "two hundred thirty-one billion, five hundred twenty million, seven hundred fifty thousand, seven hundred seventy-one".