131311099 has 2 divisors, whose sum is σ = 131311100. Its totient is φ = 131311098.

The previous prime is 131311073. The next prime is 131311123. The reversal of 131311099 is 990113131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131311099 is a prime.

It is not a weakly prime, because it can be changed into another prime (131311199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65655549 + 65655550.

It is an arithmetic number, because the mean of its divisors is an integer number (65655550).

Almost surely, 2^131311099 is an apocalyptic number.

131311099 is a deficient number, since it is larger than the sum of its proper divisors (1).

131311099 is an equidigital number, since it uses as much as digits as its factorization.

131311099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 131311099 is about 11459.1055061030. The cubic root of 131311099 is about 508.2770243340.

The spelling of 131311099 in words is "one hundred thirty-one million, three hundred eleven thousand, ninety-nine".