131131331 has 8 divisors (see below), whose sum is σ = 139043280. Its totient is φ = 123320448.

The previous prime is 131131321. The next prime is 131131337. The reversal of 131131331 is 133131131.

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 131131331 - 2¹⁸ = 130869187 is a prime.

It is a super-2 number, since 2×131131331² = 34390851939663122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131131337) 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, 22586 + ... + 27791.

It is an arithmetic number, because the mean of its divisors is an integer number (17380410).

Almost surely, 2^131131331 is an apocalyptic number.

131131331 is a deficient number, since it is larger than the sum of its proper divisors (7911949).

131131331 is a wasteful number, since it uses less digits than its factorization.

131131331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50533.

The product of its digits is 81, while the sum is 17.

The square root of 131131331 is about 11451.2589264238. The cubic root of 131131331 is about 508.0449706505.

Adding to 131131331 its reverse (133131131), we get a palindrome (264262462).

The spelling of 131131331 in words is "one hundred thirty-one million, one hundred thirty-one thousand, three hundred thirty-one".