831771872923 has 2 divisors, whose sum is σ = 831771872924. Its totient is φ = 831771872922.

The previous prime is 831771872881. The next prime is 831771872933. The reversal of 831771872923 is 329278177138.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-831771872923 is a prime.

It is not a weakly prime, because it can be changed into another prime (831771872933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415885936461 + 415885936462.

It is an arithmetic number, because the mean of its divisors is an integer number (415885936462).

Almost surely, 2^831771872923 is an apocalyptic number.

831771872923 is a deficient number, since it is larger than the sum of its proper divisors (1).

831771872923 is an equidigital number, since it uses as much as digits as its factorization.

831771872923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7112448, while the sum is 58.

The spelling of 831771872923 in words is "eight hundred thirty-one billion, seven hundred seventy-one million, eight hundred seventy-two thousand, nine hundred twenty-three".