131769331 has 4 divisors (see below), whose sum is σ = 131810200. Its totient is φ = 131728464.

The previous prime is 131769317. The next prime is 131769349. The reversal of 131769331 is 133967131.

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 131769331 - 2⁵ = 131769299 is a prime.

It is a super-2 number, since 2×131769331² = 34726313184375122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131769311) 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, 15141 + ... + 22198.

It is an arithmetic number, because the mean of its divisors is an integer number (32952550).

Almost surely, 2^131769331 is an apocalyptic number.

131769331 is a deficient number, since it is larger than the sum of its proper divisors (40869).

131769331 is an equidigital number, since it uses as much as digits as its factorization.

131769331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40868.

The product of its digits is 10206, while the sum is 34.

The square root of 131769331 is about 11479.0823239491. The cubic root of 131769331 is about 508.8675770964.

The spelling of 131769331 in words is "one hundred thirty-one million, seven hundred sixty-nine thousand, three hundred thirty-one".