317640607 has 4 divisors (see below), whose sum is σ = 323633880. Its totient is φ = 311647336.

The previous prime is 317640559. The next prime is 317640611. The reversal of 317640607 is 706046713.

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

It is a cyclic number.

It is not a de Polignac number, because 317640607 - 2¹⁵ = 317607839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317640647) 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, 2996557 + ... + 2996662.

It is an arithmetic number, because the mean of its divisors is an integer number (80908470).

Almost surely, 2^317640607 is an apocalyptic number.

317640607 is a deficient number, since it is larger than the sum of its proper divisors (5993273).

317640607 is an equidigital number, since it uses as much as digits as its factorization.

317640607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993272.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 317640607 is about 17822.4747720399. The cubic root of 317640607 is about 682.3051862943.

The spelling of 317640607 in words is "three hundred seventeen million, six hundred forty thousand, six hundred seven".