131255911 has 2 divisors, whose sum is σ = 131255912. Its totient is φ = 131255910.

The previous prime is 131255903. The next prime is 131255921. The reversal of 131255911 is 119552131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131255911 - 2³ = 131255903 is a prime.

It is a super-2 number, since 2×131255911² = 34456228344879842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131255911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131255921) 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, 65627955 + 65627956.

It is an arithmetic number, because the mean of its divisors is an integer number (65627956).

Almost surely, 2^131255911 is an apocalyptic number.

131255911 is a deficient number, since it is larger than the sum of its proper divisors (1).

131255911 is an equidigital number, since it uses as much as digits as its factorization.

131255911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 28.

The square root of 131255911 is about 11456.6972116749. The cubic root of 131255911 is about 508.2058073962.

The spelling of 131255911 in words is "one hundred thirty-one million, two hundred fifty-five thousand, nine hundred eleven".