131302421515 has 16 divisors (see below), whose sum is σ = 162790391232. Its totient is φ = 101590948224.

The previous prime is 131302421477. The next prime is 131302421533. The reversal of 131302421515 is 515124203131.

It is a cyclic number.

It is not a de Polignac number, because 131302421515 - 2¹⁷ = 131302290443 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2094084 + ... + 2155873.

It is an arithmetic number, because the mean of its divisors is an integer number (10174399452).

Almost surely, 2^131302421515 is an apocalyptic number.

131302421515 is a deficient number, since it is larger than the sum of its proper divisors (31487969717).

131302421515 is a wasteful number, since it uses less digits than its factorization.

131302421515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250166.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 131302421515 its reverse (515124203131), we get a palindrome (646426624646).

The spelling of 131302421515 in words is "one hundred thirty-one billion, three hundred two million, four hundred twenty-one thousand, five hundred fifteen".