131245431756 has 24 divisors (see below), whose sum is σ = 306250076160. Its totient is φ = 43746943632.

The previous prime is 131245431703. The next prime is 131245431767. The reversal of 131245431756 is 657134542131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196285 + ... + 548651.

It is an arithmetic number, because the mean of its divisors is an integer number (12760419840).

Almost surely, 2^131245431756 is an apocalyptic number.

It is an amenable number.

131245431756 is an abundant number, since it is smaller than the sum of its proper divisors (175004644404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131245431756 is a wasteful number, since it uses less digits than its factorization.

131245431756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383413 (or 383411 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

Adding to 131245431756 its reverse (657134542131), we get a palindrome (788379973887).

The spelling of 131245431756 in words is "one hundred thirty-one billion, two hundred forty-five million, four hundred thirty-one thousand, seven hundred fifty-six".