131690197815 has 32 divisors (see below), whose sum is σ = 229878763776. Its totient is φ = 63844373760.

The previous prime is 131690197781. The next prime is 131690197829. The reversal of 131690197815 is 518791096131.

It is not a de Polignac number, because 131690197815 - 2²⁰ = 131689149239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2479579 + ... + 2532131.

It is an arithmetic number, because the mean of its divisors is an integer number (7183711368).

Almost surely, 2^131690197815 is an apocalyptic number.

131690197815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131690197815 is a deficient number, since it is larger than the sum of its proper divisors (98188565961).

131690197815 is a wasteful number, since it uses less digits than its factorization.

131690197815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67759.

The product of its (nonzero) digits is 408240, while the sum is 51.

The spelling of 131690197815 in words is "one hundred thirty-one billion, six hundred ninety million, one hundred ninety-seven thousand, eight hundred fifteen".