131496249 has 4 divisors (see below), whose sum is σ = 175328336. Its totient is φ = 87664164.

The previous prime is 131496247. The next prime is 131496257. The reversal of 131496249 is 942694131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 942694131 = 3 ⋅314231377.

It is not a de Polignac number, because 131496249 - 2¹ = 131496247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131496247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21916039 + ... + 21916044.

It is an arithmetic number, because the mean of its divisors is an integer number (43832084).

Almost surely, 2^131496249 is an apocalyptic number.

It is an amenable number.

131496249 is a deficient number, since it is larger than the sum of its proper divisors (43832087).

131496249 is an equidigital number, since it uses as much as digits as its factorization.

131496249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43832086.

The product of its digits is 46656, while the sum is 39.

The square root of 131496249 is about 11467.1813886412. The cubic root of 131496249 is about 508.5158040857.

The spelling of 131496249 in words is "one hundred thirty-one million, four hundred ninety-six thousand, two hundred forty-nine".