131382785 has 16 divisors (see below), whose sum is σ = 165369600. Its totient is φ = 100013760.

The previous prime is 131382773. The next prime is 131382791. The reversal of 131382785 is 587283131.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-131382785 is a prime.

It is a super-2 number, since 2×131382785² = 34522872388712450, which contains 22 as substring.

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, 20015 + ... + 25755.

It is an arithmetic number, because the mean of its divisors is an integer number (10335600).

Almost surely, 2^131382785 is an apocalyptic number.

It is an amenable number.

131382785 is a deficient number, since it is larger than the sum of its proper divisors (33986815).

131382785 is a wasteful number, since it uses less digits than its factorization.

131382785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5968.

The product of its digits is 40320, while the sum is 38.

The square root of 131382785 is about 11462.2329848943. The cubic root of 131382785 is about 508.3695012040.

The spelling of 131382785 in words is "one hundred thirty-one million, three hundred eighty-two thousand, seven hundred eighty-five".