131512513728 has 56 divisors (see below), whose sum is σ = 353664489520. Its totient is φ = 43118853120.

The previous prime is 131512513679. The next prime is 131512513729. The reversal of 131512513728 is 827315215131.

It is a happy number.

It is a super-3 number, since 3×131512513728³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (131512513729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5602723 + ... + 5626146.

Almost surely, 2^131512513728 is an apocalyptic number.

It is an amenable number.

131512513728 is an abundant number, since it is smaller than the sum of its proper divisors (222151975792).

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

131512513728 is a wasteful number, since it uses less digits than its factorization.

131512513728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11228945 (or 11228935 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

Adding to 131512513728 its reverse (827315215131), we get a palindrome (958827728859).

The spelling of 131512513728 in words is "one hundred thirty-one billion, five hundred twelve million, five hundred thirteen thousand, seven hundred twenty-eight".