131302317 has 16 divisors (see below), whose sum is σ = 180970560. Its totient is φ = 84633600.

The previous prime is 131302313. The next prime is 131302321. The reversal of 131302317 is 713203131.

It is an interprime number because it is at equal distance from previous prime (131302313) and next prime (131302321).

It is not a de Polignac number, because 131302317 - 2² = 131302313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131302293 and 131302302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131302313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4717 + ... + 16877.

It is an arithmetic number, because the mean of its divisors is an integer number (11310660).

Almost surely, 2^131302317 is an apocalyptic number.

It is an amenable number.

131302317 is a deficient number, since it is larger than the sum of its proper divisors (49668243).

131302317 is a wasteful number, since it uses less digits than its factorization.

131302317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12284.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 131302317 is about 11458.7223109734. The cubic root of 131302317 is about 508.2656930036.

Adding to 131302317 its reverse (713203131), we get a palindrome (844505448).

The spelling of 131302317 in words is "one hundred thirty-one million, three hundred two thousand, three hundred seventeen".