131310187 has 2 divisors, whose sum is σ = 131310188. Its totient is φ = 131310186.

The previous prime is 131310119. The next prime is 131310191. The reversal of 131310187 is 781013131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131310187 is a prime.

It is not a weakly prime, because it can be changed into another prime (131310107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65655093 + 65655094.

It is an arithmetic number, because the mean of its divisors is an integer number (65655094).

Almost surely, 2^131310187 is an apocalyptic number.

131310187 is a deficient number, since it is larger than the sum of its proper divisors (1).

131310187 is an equidigital number, since it uses as much as digits as its factorization.

131310187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 131310187 is about 11459.0657123519. The cubic root of 131310187 is about 508.2758476127.

The spelling of 131310187 in words is "one hundred thirty-one million, three hundred ten thousand, one hundred eighty-seven".