131195807 has 2 divisors, whose sum is σ = 131195808. Its totient is φ = 131195806.

The previous prime is 131195773. The next prime is 131195837. The reversal of 131195807 is 708591131.

It is a strong prime.

It is an emirp because it is prime and its reverse (708591131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131195807 - 2²⁰ = 130147231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131195837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65597903 + 65597904.

It is an arithmetic number, because the mean of its divisors is an integer number (65597904).

Almost surely, 2^131195807 is an apocalyptic number.

131195807 is a deficient number, since it is larger than the sum of its proper divisors (1).

131195807 is an equidigital number, since it uses as much as digits as its factorization.

131195807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 131195807 is about 11454.0738167693. The cubic root of 131195807 is about 508.1282239305.

The spelling of 131195807 in words is "one hundred thirty-one million, one hundred ninety-five thousand, eight hundred seven".