2931317 has 6 divisors (see below), whose sum is σ = 2980278. Its totient is φ = 2883144.

The previous prime is 2931307. The next prime is 2931319. The reversal of 2931317 is 7131392.

It can be written as a sum of positive squares in only one way, i.e., 2172676 + 758641 = 1474^2 + 871^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2931317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2931319) 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, 4163 + ... + 4815.

It is an arithmetic number, because the mean of its divisors is an integer number (496713).

2^2931317 is an apocalyptic number.

It is an amenable number.

2931317 is a deficient number, since it is larger than the sum of its proper divisors (48961).

2931317 is an frugal number, since it uses more digits than its factorization.

2931317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787 (or 720 counting only the distinct ones).

The product of its digits is 1134, while the sum is 26.

The square root of 2931317 is about 1712.1089334502. The cubic root of 2931317 is about 143.1158042820.

It can be divided in two parts, 293 and 1317, that multiplied together give a triangular number (385881 = T₈₇₈).

The spelling of 2931317 in words is "two million, nine hundred thirty-one thousand, three hundred seventeen".