131311199 has 2 divisors, whose sum is σ = 131311200. Its totient is φ = 131311198.

The previous prime is 131311183. The next prime is 131311241. The reversal of 131311199 is 991113131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131311199 - 2⁴ = 131311183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131311129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65655599 + 65655600.

It is an arithmetic number, because the mean of its divisors is an integer number (65655600).

Almost surely, 2^131311199 is an apocalyptic number.

131311199 is a deficient number, since it is larger than the sum of its proper divisors (1).

131311199 is an equidigital number, since it uses as much as digits as its factorization.

131311199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 729, while the sum is 29.

The square root of 131311199 is about 11459.1098694445. The cubic root of 131311199 is about 508.2771533601.

The spelling of 131311199 in words is "one hundred thirty-one million, three hundred eleven thousand, one hundred ninety-nine".