131247713 has 4 divisors (see below), whose sum is σ = 131272980. Its totient is φ = 131222448.

The previous prime is 131247703. The next prime is 131247731. The reversal of 131247713 is 317742131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 317742131 = 7 ⋅45391733.

It can be written as a sum of positive squares in 2 ways, for example, as 108513889 + 22733824 = 10417^2 + 4768^2 .

It is a cyclic number.

It is not a de Polignac number, because 131247713 - 2¹² = 131243617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131247703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670 + ... + 16287.

It is an arithmetic number, because the mean of its divisors is an integer number (32818245).

Almost surely, 2^131247713 is an apocalyptic number.

It is an amenable number.

131247713 is a deficient number, since it is larger than the sum of its proper divisors (25267).

131247713 is an equidigital number, since it uses as much as digits as its factorization.

131247713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25266.

The product of its digits is 3528, while the sum is 29.

The square root of 131247713 is about 11456.3394240918. The cubic root of 131247713 is about 508.1952266462.

Adding to 131247713 its reverse (317742131), we get a palindrome (448989844).

The spelling of 131247713 in words is "one hundred thirty-one million, two hundred forty-seven thousand, seven hundred thirteen".