131324987 has 2 divisors, whose sum is σ = 131324988. Its totient is φ = 131324986.

The previous prime is 131324953. The next prime is 131324989. The reversal of 131324987 is 789423131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131324987 - 2¹⁴ = 131308603 is a prime.

Together with 131324989, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131324987.

It is not a weakly prime, because it can be changed into another prime (131324989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65662493 + 65662494.

It is an arithmetic number, because the mean of its divisors is an integer number (65662494).

Almost surely, 2^131324987 is an apocalyptic number.

131324987 is a deficient number, since it is larger than the sum of its proper divisors (1).

131324987 is an equidigital number, since it uses as much as digits as its factorization.

131324987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 131324987 is about 11459.7114710624. The cubic root of 131324987 is about 508.2949428561.

The spelling of 131324987 in words is "one hundred thirty-one million, three hundred twenty-four thousand, nine hundred eighty-seven".