131430287 has 2 divisors, whose sum is σ = 131430288. Its totient is φ = 131430286.

The previous prime is 131430217. The next prime is 131430289. The reversal of 131430287 is 782034131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131430287 - 2²⁶ = 64321423 is a prime.

Together with 131430289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131430289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65715143 + 65715144.

It is an arithmetic number, because the mean of its divisors is an integer number (65715144).

Almost surely, 2^131430287 is an apocalyptic number.

131430287 is a deficient number, since it is larger than the sum of its proper divisors (1).

131430287 is an equidigital number, since it uses as much as digits as its factorization.

131430287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 131430287 is about 11464.3049069710. The cubic root of 131430287 is about 508.4307615339.

The spelling of 131430287 in words is "one hundred thirty-one million, four hundred thirty thousand, two hundred eighty-seven".