3131617 has 4 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 3118276.

The previous prime is 3131603. The next prime is 3131629. The reversal of 3131617 is 7161313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7161313 = 37 ⋅193549.

It is a cyclic number.

It is not a de Polignac number, because 3131617 - 2⁷ = 3131489 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131017) 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, 6313 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^3131617 is an apocalyptic number.

It is an amenable number.

3131617 is a deficient number, since it is larger than the sum of its proper divisors (13343).

3131617 is a wasteful number, since it uses less digits than its factorization.

3131617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13342.

The product of its digits is 378, while the sum is 22.

The square root of 3131617 is about 1769.6375335079. The cubic root of 3131617 is about 146.3040046983.

The spelling of 3131617 in words is "three million, one hundred thirty-one thousand, six hundred seventeen".