131188793 has 2 divisors, whose sum is σ = 131188794. Its totient is φ = 131188792.

The previous prime is 131188781. The next prime is 131188823. The reversal of 131188793 is 397881131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91145209 + 40043584 = 9547^2 + 6328^2 .

It is a cyclic number.

It is not a de Polignac number, because 131188793 - 2¹⁰ = 131187769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131188793.

It is not a weakly prime, because it can be changed into another prime (131188723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65594396 + 65594397.

It is an arithmetic number, because the mean of its divisors is an integer number (65594397).

Almost surely, 2^131188793 is an apocalyptic number.

It is an amenable number.

131188793 is a deficient number, since it is larger than the sum of its proper divisors (1).

131188793 is an equidigital number, since it uses as much as digits as its factorization.

131188793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 41.

The square root of 131188793 is about 11453.7676334034. The cubic root of 131188793 is about 508.1191685729.

The spelling of 131188793 in words is "one hundred thirty-one million, one hundred eighty-eight thousand, seven hundred ninety-three".