131365499 has 2 divisors, whose sum is σ = 131365500. Its totient is φ = 131365498.

The previous prime is 131365469. The next prime is 131365519. The reversal of 131365499 is 994563131.

It is a strong prime.

It is an emirp because it is prime and its reverse (994563131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131365499 - 2¹² = 131361403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131365439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65682749 + 65682750.

It is an arithmetic number, because the mean of its divisors is an integer number (65682750).

Almost surely, 2^131365499 is an apocalyptic number.

131365499 is a deficient number, since it is larger than the sum of its proper divisors (1).

131365499 is an equidigital number, since it uses as much as digits as its factorization.

131365499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 41.

The square root of 131365499 is about 11461.4789185340. The cubic root of 131365499 is about 508.3472048769.

The spelling of 131365499 in words is "one hundred thirty-one million, three hundred sixty-five thousand, four hundred ninety-nine".