3131297 has 4 divisors (see below), whose sum is σ = 3372180. Its totient is φ = 2890416.

The previous prime is 3131267. The next prime is 3131299. The reversal of 3131297 is 7921313.

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 519841 + 2611456 = 721^2 + 1616^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131297 - 2⁸ = 3131041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131299) 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 3 ways as a sum of consecutive naturals, for example, 120422 + ... + 120447.

It is an arithmetic number, because the mean of its divisors is an integer number (843045).

Almost surely, 2^3131297 is an apocalyptic number.

It is an amenable number.

3131297 is a deficient number, since it is larger than the sum of its proper divisors (240883).

3131297 is a wasteful number, since it uses less digits than its factorization.

3131297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240882.

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

The square root of 3131297 is about 1769.5471172026. The cubic root of 3131297 is about 146.2990212370.

The spelling of 3131297 in words is "three million, one hundred thirty-one thousand, two hundred ninety-seven".