231791165628 has 36 divisors (see below), whose sum is σ = 594483681960. Its totient is φ = 70239746720.

The previous prime is 231791165621. The next prime is 231791165657. The reversal of 231791165628 is 826561197132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231791165621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79816443 + ... + 79819346.

It is an arithmetic number, because the mean of its divisors is an integer number (16513435610).

Almost surely, 2^231791165628 is an apocalyptic number.

It is an amenable number.

231791165628 is an abundant number, since it is smaller than the sum of its proper divisors (362692516332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231791165628 is a wasteful number, since it uses less digits than its factorization.

231791165628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159635818 (or 159635805 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The spelling of 231791165628 in words is "two hundred thirty-one billion, seven hundred ninety-one million, one hundred sixty-five thousand, six hundred twenty-eight".