131321500756 has 6 divisors (see below), whose sum is σ = 229812626330. Its totient is φ = 65660750376.

The previous prime is 131321500697. The next prime is 131321500801. The reversal of 131321500756 is 657005123131.

It can be written as a sum of positive squares in only one way, i.e., 125840467600 + 5481033156 = 354740^2 + 74034^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16415187591 + ... + 16415187598.

Almost surely, 2^131321500756 is an apocalyptic number.

It is an amenable number.

131321500756 is a deficient number, since it is larger than the sum of its proper divisors (98491125574).

131321500756 is a wasteful number, since it uses less digits than its factorization.

131321500756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32830375193 (or 32830375191 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

Adding to 131321500756 its reverse (657005123131), we get a palindrome (788326623887).

The spelling of 131321500756 in words is "one hundred thirty-one billion, three hundred twenty-one million, five hundred thousand, seven hundred fifty-six".