1317941 has 2 divisors, whose sum is σ = 1317942. Its totient is φ = 1317940.

The previous prime is 1317929. The next prime is 1317947. The reversal of 1317941 is 1497131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1110916 + 207025 = 1054^2 + 455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317941 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1317941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658970 + 658971.

It is an arithmetic number, because the mean of its divisors is an integer number (658971).

2^1317941 is an apocalyptic number.

It is an amenable number.

1317941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317941 is an equidigital number, since it uses as much as digits as its factorization.

1317941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 26.

The square root of 1317941 is about 1148.0161148695. The cubic root of 1317941 is about 109.6390649189.

The spelling of 1317941 in words is "one million, three hundred seventeen thousand, nine hundred forty-one".