231161596497 has 16 divisors (see below), whose sum is σ = 368804826880. Its totient is φ = 142253289936.

The previous prime is 231161596487. The next prime is 231161596553. The reversal of 231161596497 is 794695161132.

231161596497 is a `hidden beast` number, since 2 + 3 + 1 + 1 + 6 + 1 + 596 + 49 + 7 = 666.

It is not a de Polignac number, because 231161596497 - 2²⁰ = 231160547921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231161596487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329289673 + ... + 329290374.

It is an arithmetic number, because the mean of its divisors is an integer number (23050301680).

Almost surely, 2^231161596497 is an apocalyptic number.

231161596497 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

231161596497 is a deficient number, since it is larger than the sum of its proper divisors (137643230383).

231161596497 is a wasteful number, since it uses less digits than its factorization.

231161596497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658580069 (or 658580063 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The spelling of 231161596497 in words is "two hundred thirty-one billion, one hundred sixty-one million, five hundred ninety-six thousand, four hundred ninety-seven".