131512651321 has 8 divisors (see below), whose sum is σ = 143740583424. Its totient is φ = 119783818560.

The previous prime is 131512651307. The next prime is 131512651327. The reversal of 131512651321 is 123156215131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131512651321 - 2¹⁵ = 131512618553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131512651327) 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, 124774285 + ... + 124775338.

It is an arithmetic number, because the mean of its divisors is an integer number (17967572928).

Almost surely, 2^131512651321 is an apocalyptic number.

It is an amenable number.

131512651321 is a deficient number, since it is larger than the sum of its proper divisors (12227932103).

131512651321 is a wasteful number, since it uses less digits than its factorization.

131512651321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249549671.

The product of its digits is 5400, while the sum is 31.

Adding to 131512651321 its reverse (123156215131), we get a palindrome (254668866452).

The spelling of 131512651321 in words is "one hundred thirty-one billion, five hundred twelve million, six hundred fifty-one thousand, three hundred twenty-one".