2031317 has 4 divisors (see below), whose sum is σ = 2045100. Its totient is φ = 2017536.

The previous prime is 2031301. The next prime is 2031319. The reversal of 2031317 is 7131302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 790321 + 1240996 = 889^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031317 - 2⁴ = 2031301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031295 and 2031304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031319) 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, 6668 + ... + 6965.

It is an arithmetic number, because the mean of its divisors is an integer number (511275).

2^2031317 is an apocalyptic number.

It is an amenable number.

2031317 is a deficient number, since it is larger than the sum of its proper divisors (13783).

2031317 is a wasteful number, since it uses less digits than its factorization.

2031317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13782.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 2031317 is about 1425.2427863350. The cubic root of 2031317 is about 126.6463179069.

Adding to 2031317 its reverse (7131302), we get a palindrome (9162619).

The spelling of 2031317 in words is "two million, thirty-one thousand, three hundred seventeen".