131320323664 has 20 divisors (see below), whose sum is σ = 254504727520. Its totient is φ = 65641684320.

The previous prime is 131320323661. The next prime is 131320323709. The reversal of 131320323664 is 466323023131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131320323661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096122 + ... + 1210009.

It is an arithmetic number, because the mean of its divisors is an integer number (12725236376).

Almost surely, 2^131320323664 is an apocalyptic number.

It is an amenable number.

131320323664 is a deficient number, since it is larger than the sum of its proper divisors (123184403856).

131320323664 is a wasteful number, since it uses less digits than its factorization.

131320323664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309698 (or 2309692 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 34.

Adding to 131320323664 its reverse (466323023131), we get a palindrome (597643346795).

The spelling of 131320323664 in words is "one hundred thirty-one billion, three hundred twenty million, three hundred twenty-three thousand, six hundred sixty-four".