131689395 has 80 divisors (see below), whose sum is σ = 258432768. Its totient is φ = 63866880.

The previous prime is 131689387. The next prime is 131689403. The reversal of 131689395 is 593986131.

It is an interprime number because it is at equal distance from previous prime (131689387) and next prime (131689403).

It is not a de Polignac number, because 131689395 - 2³ = 131689387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 131689395.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 213127 + ... + 213743.

Almost surely, 2^131689395 is an apocalyptic number.

131689395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131689395 is a deficient number, since it is larger than the sum of its proper divisors (126743373).

131689395 is a wasteful number, since it uses less digits than its factorization.

131689395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 673 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 131689395 is about 11475.5999843145. The cubic root of 131689395 is about 508.7646571770.

The spelling of 131689395 in words is "one hundred thirty-one million, six hundred eighty-nine thousand, three hundred ninety-five".