131299243 has 2 divisors, whose sum is σ = 131299244. Its totient is φ = 131299242.

The previous prime is 131299183. The next prime is 131299283. The reversal of 131299243 is 342992131.

It is a strong prime.

It is an emirp because it is prime and its reverse (342992131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131299243 - 2²⁵ = 97744811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131299199 and 131299208.

It is not a weakly prime, because it can be changed into another prime (131299283) 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, 65649621 + 65649622.

It is an arithmetic number, because the mean of its divisors is an integer number (65649622).

Almost surely, 2^131299243 is an apocalyptic number.

131299243 is a deficient number, since it is larger than the sum of its proper divisors (1).

131299243 is an equidigital number, since it uses as much as digits as its factorization.

131299243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 131299243 is about 11458.5881765600. The cubic root of 131299243 is about 508.2617265315.

The spelling of 131299243 in words is "one hundred thirty-one million, two hundred ninety-nine thousand, two hundred forty-three".