317721014 has 12 divisors (see below), whose sum is σ = 516062196. Its totient is φ = 146640312.

The previous prime is 317720993. The next prime is 317721017. The reversal of 317721014 is 410127713.

It is a happy number.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317721017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 469664 + ... + 470339.

It is an arithmetic number, because the mean of its divisors is an integer number (43005183).

Almost surely, 2^317721014 is an apocalyptic number.

317721014 is a deficient number, since it is larger than the sum of its proper divisors (198341182).

317721014 is a wasteful number, since it uses less digits than its factorization.

317721014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940031 (or 940018 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 317721014 is about 17824.7304046934. The cubic root of 317721014 is about 682.3627539597.

Adding to 317721014 its reverse (410127713), we get a palindrome (727848727).

The spelling of 317721014 in words is "three hundred seventeen million, seven hundred twenty-one thousand, fourteen".