2631917 has 2 divisors, whose sum is σ = 2631918. Its totient is φ = 2631916.

The previous prime is 2631887. The next prime is 2631919. The reversal of 2631917 is 7191362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1653796 + 978121 = 1286^2 + 989^2 .

It is a cyclic number.

It is not a de Polignac number, because 2631917 - 2⁸ = 2631661 is a prime.

Together with 2631919, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2631917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2631919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315958 + 1315959.

It is an arithmetic number, because the mean of its divisors is an integer number (1315959).

2^2631917 is an apocalyptic number.

It is an amenable number.

2631917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2631917 is an equidigital number, since it uses as much as digits as its factorization.

2631917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 29.

The square root of 2631917 is about 1622.3184027804. The cubic root of 2631917 is about 138.0672674925.

The spelling of 2631917 in words is "two million, six hundred thirty-one thousand, nine hundred seventeen".