317642929 has 4 divisors (see below), whose sum is σ = 321994276. Its totient is φ = 313291584.

The previous prime is 317642917. The next prime is 317642933. The reversal of 317642929 is 929246713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 929246713 = 23 ⋅40402031.

It can be written as a sum of positive squares in 2 ways, for example, as 117137329 + 200505600 = 10823^2 + 14160^2 .

It is a cyclic number.

It is not a de Polignac number, because 317642929 - 2⁹ = 317642417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317642329) 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, 2175564 + ... + 2175709.

It is an arithmetic number, because the mean of its divisors is an integer number (80498569).

Almost surely, 2^317642929 is an apocalyptic number.

It is an amenable number.

317642929 is a deficient number, since it is larger than the sum of its proper divisors (4351347).

317642929 is an equidigital number, since it uses as much as digits as its factorization.

317642929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351346.

The product of its digits is 163296, while the sum is 43.

The square root of 317642929 is about 17822.5399143893. The cubic root of 317642929 is about 682.3068488743.

The spelling of 317642929 in words is "three hundred seventeen million, six hundred forty-two thousand, nine hundred twenty-nine".