231665332604 has 6 divisors (see below), whose sum is σ = 405414332064. Its totient is φ = 115832666300.

The previous prime is 231665332601. The next prime is 231665332607. The reversal of 231665332604 is 406233566132.

It is an interprime number because it is at equal distance from previous prime (231665332601) and next prime (231665332607).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231665332601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28958166572 + ... + 28958166579.

It is an arithmetic number, because the mean of its divisors is an integer number (67569055344).

Almost surely, 2^231665332604 is an apocalyptic number.

It is an amenable number.

231665332604 is a deficient number, since it is larger than the sum of its proper divisors (173748999460).

231665332604 is a wasteful number, since it uses less digits than its factorization.

231665332604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57916333155 (or 57916333153 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 41.

Adding to 231665332604 its reverse (406233566132), we get a palindrome (637898898736).

The spelling of 231665332604 in words is "two hundred thirty-one billion, six hundred sixty-five million, three hundred thirty-two thousand, six hundred four".