997588472831 has 2 divisors, whose sum is σ = 997588472832. Its totient is φ = 997588472830.

The previous prime is 997588472801. The next prime is 997588472843. The reversal of 997588472831 is 138274885799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997588472831 - 2³⁰ = 996514731007 is a prime.

It is a super-2 number, since 2×997588472831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997588472801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498794236415 + 498794236416.

It is an arithmetic number, because the mean of its divisors is an integer number (498794236416).

Almost surely, 2^997588472831 is an apocalyptic number.

997588472831 is a deficient number, since it is larger than the sum of its proper divisors (1).

997588472831 is an equidigital number, since it uses as much as digits as its factorization.

997588472831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243855360, while the sum is 71.

The spelling of 997588472831 in words is "nine hundred ninety-seven billion, five hundred eighty-eight million, four hundred seventy-two thousand, eight hundred thirty-one".