231441645165 has 32 divisors (see below), whose sum is σ = 383837771520. Its totient is φ = 118942096896.

The previous prime is 231441645143. The next prime is 231441645179. The reversal of 231441645165 is 561546144132.

It is not a de Polignac number, because 231441645165 - 2⁶ = 231441645101 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310072 + ... + 747681.

It is an arithmetic number, because the mean of its divisors is an integer number (11994930360).

Almost surely, 2^231441645165 is an apocalyptic number.

It is an amenable number.

231441645165 is a deficient number, since it is larger than the sum of its proper divisors (152396126355).

231441645165 is a wasteful number, since it uses less digits than its factorization.

231441645165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058293.

The product of its digits is 345600, while the sum is 42.

Adding to 231441645165 its reverse (561546144132), we get a palindrome (792987789297).

The spelling of 231441645165 in words is "two hundred thirty-one billion, four hundred forty-one million, six hundred forty-five thousand, one hundred sixty-five".