631345317 has 8 divisors (see below), whose sum is σ = 841912896. Its totient is φ = 420837312.

The previous prime is 631345301. The next prime is 631345409. The reversal of 631345317 is 713543136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 631345317 - 2⁴ = 631345301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631345717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25453 + ... + 43709.

It is an arithmetic number, because the mean of its divisors is an integer number (105239112).

Almost surely, 2^631345317 is an apocalyptic number.

It is an amenable number.

631345317 is a deficient number, since it is larger than the sum of its proper divisors (210567579).

631345317 is a wasteful number, since it uses less digits than its factorization.

631345317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29787.

The product of its digits is 22680, while the sum is 33.

The square root of 631345317 is about 25126.5858603989. The cubic root of 631345317 is about 857.8716602123.

The spelling of 631345317 in words is "six hundred thirty-one million, three hundred forty-five thousand, three hundred seventeen".