131331269 has 2 divisors, whose sum is σ = 131331270. Its totient is φ = 131331268.

The previous prime is 131331229. The next prime is 131331293. The reversal of 131331269 is 962133131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131217025 + 114244 = 11455^2 + 338^2 .

It is a cyclic number.

It is not a de Polignac number, because 131331269 - 2¹² = 131327173 is a prime.

It is a super-2 number, since 2×131331269² = 34495804434300722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131331229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65665634 + 65665635.

It is an arithmetic number, because the mean of its divisors is an integer number (65665635).

Almost surely, 2^131331269 is an apocalyptic number.

It is an amenable number.

131331269 is a deficient number, since it is larger than the sum of its proper divisors (1).

131331269 is an equidigital number, since it uses as much as digits as its factorization.

131331269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 29.

The square root of 131331269 is about 11459.9855584551. The cubic root of 131331269 is about 508.3030475790.

The spelling of 131331269 in words is "one hundred thirty-one million, three hundred thirty-one thousand, two hundred sixty-nine".