131890331 has 8 divisors (see below), whose sum is σ = 135355440. Its totient is φ = 128443392.

The previous prime is 131890321. The next prime is 131890333. The reversal of 131890331 is 133098131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131890331 - 2²⁶ = 64781467 is a prime.

It is a super-2 number, since 2×131890331² = 34790118822579122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131890294 and 131890303.

It is not an unprimeable number, because it can be changed into a prime (131890333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10835 + ... + 19523.

It is an arithmetic number, because the mean of its divisors is an integer number (16919430).

Almost surely, 2^131890331 is an apocalyptic number.

131890331 is a deficient number, since it is larger than the sum of its proper divisors (3465109).

131890331 is an equidigital number, since it uses as much as digits as its factorization.

131890331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9085.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 131890331 is about 11484.3515707244. The cubic root of 131890331 is about 509.0232889480.

The spelling of 131890331 in words is "one hundred thirty-one million, eight hundred ninety thousand, three hundred thirty-one".