131740249 has 2 divisors, whose sum is σ = 131740250. Its totient is φ = 131740248.

The previous prime is 131740247. The next prime is 131740277. The reversal of 131740249 is 942047131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95355225 + 36385024 = 9765^2 + 6032^2 .

It is an emirp because it is prime and its reverse (942047131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131740249 - 2¹ = 131740247 is a prime.

Together with 131740247, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 131740249.

It is not a weakly prime, because it can be changed into another prime (131740247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65870124 + 65870125.

It is an arithmetic number, because the mean of its divisors is an integer number (65870125).

Almost surely, 2^131740249 is an apocalyptic number.

It is an amenable number.

131740249 is a deficient number, since it is larger than the sum of its proper divisors (1).

131740249 is an equidigital number, since it uses as much as digits as its factorization.

131740249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 131740249 is about 11477.8155151579. The cubic root of 131740249 is about 508.8301379957.

The spelling of 131740249 in words is "one hundred thirty-one million, seven hundred forty thousand, two hundred forty-nine".