131717307 has 4 divisors (see below), whose sum is σ = 175623080. Its totient is φ = 87811536.

The previous prime is 131717303. The next prime is 131717317. The reversal of 131717307 is 703717131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131717307 - 2² = 131717303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131717303) 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, 21952882 + ... + 21952887.

It is an arithmetic number, because the mean of its divisors is an integer number (43905770).

Almost surely, 2^131717307 is an apocalyptic number.

131717307 is a deficient number, since it is larger than the sum of its proper divisors (43905773).

131717307 is an equidigital number, since it uses as much as digits as its factorization.

131717307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43905772.

The product of its (nonzero) digits is 3087, while the sum is 30.

The square root of 131717307 is about 11476.8160654425. The cubic root of 131717307 is about 508.8005994181.

The spelling of 131717307 in words is "one hundred thirty-one million, seven hundred seventeen thousand, three hundred seven".