231163344665 has 12 divisors (see below), whose sum is σ = 304906362852. Its totient is φ = 168118795680.

The previous prime is 231163344661. The next prime is 231163344679. The reversal of 231163344665 is 566443361132.

It can be written as a sum of positive squares in 2 ways, for example, as 30294446809 + 200868897856 = 174053^2 + 448184^2 .

It is not a de Polignac number, because 231163344665 - 2² = 231163344661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231163344661) 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, 191043482 + ... + 191044691.

It is an arithmetic number, because the mean of its divisors is an integer number (25408863571).

Almost surely, 2^231163344665 is an apocalyptic number.

It is an amenable number.

231163344665 is a deficient number, since it is larger than the sum of its proper divisors (73743018187).

231163344665 is a wasteful number, since it uses less digits than its factorization.

231163344665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382088200 (or 382088189 counting only the distinct ones).

The product of its digits is 933120, while the sum is 44.

The spelling of 231163344665 in words is "two hundred thirty-one billion, one hundred sixty-three million, three hundred forty-four thousand, six hundred sixty-five".