131301187 has 2 divisors, whose sum is σ = 131301188. Its totient is φ = 131301186.

The previous prime is 131301179. The next prime is 131301199. The reversal of 131301187 is 781103131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131301187 - 2³ = 131301179 is a prime.

It is not a weakly prime, because it can be changed into another prime (131301487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65650593 + 65650594.

It is an arithmetic number, because the mean of its divisors is an integer number (65650594).

Almost surely, 2^131301187 is an apocalyptic number.

131301187 is a deficient number, since it is larger than the sum of its proper divisors (1).

131301187 is an equidigital number, since it uses as much as digits as its factorization.

131301187 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 131301187 is about 11458.6730034503. The cubic root of 131301187 is about 508.2642349388.

The spelling of 131301187 in words is "one hundred thirty-one million, three hundred one thousand, one hundred eighty-seven".