6431317 has 4 divisors (see below), whose sum is σ = 6437356. Its totient is φ = 6425280.

The previous prime is 6431309. The next prime is 6431323. The reversal of 6431317 is 7131346.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1739761 + 4691556 = 1319^2 + 2166^2 .

It is a cyclic number.

It is not a de Polignac number, because 6431317 - 2³ = 6431309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6431291 and 6431300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6431387) 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, 948 + ... + 3709.

It is an arithmetic number, because the mean of its divisors is an integer number (1609339).

Almost surely, 2^6431317 is an apocalyptic number.

It is an amenable number.

6431317 is a deficient number, since it is larger than the sum of its proper divisors (6039).

6431317 is a wasteful number, since it uses less digits than its factorization.

6431317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6038.

The product of its digits is 1512, while the sum is 25.

The square root of 6431317 is about 2536.0041403752. The cubic root of 6431317 is about 185.9658953927.

The spelling of 6431317 in words is "six million, four hundred thirty-one thousand, three hundred seventeen".