131962687 has 4 divisors (see below), whose sum is σ = 139725216. Its totient is φ = 124200160.

The previous prime is 131962679. The next prime is 131962697. The reversal of 131962687 is 786269131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131962687 - 2³ = 131962679 is a prime.

It is a super-3 number, since 3×131962687³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131962667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3881239 + ... + 3881272.

It is an arithmetic number, because the mean of its divisors is an integer number (34931304).

Almost surely, 2^131962687 is an apocalyptic number.

131962687 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

131962687 is a deficient number, since it is larger than the sum of its proper divisors (7762529).

131962687 is an equidigital number, since it uses as much as digits as its factorization.

131962687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762528.

The product of its digits is 108864, while the sum is 43.

The square root of 131962687 is about 11487.5013384112. The cubic root of 131962687 is about 509.1163565636.

The spelling of 131962687 in words is "one hundred thirty-one million, nine hundred sixty-two thousand, six hundred eighty-seven".