10491317 has 2 divisors, whose sum is σ = 10491318. Its totient is φ = 10491316.

The previous prime is 10491307. The next prime is 10491319. The reversal of 10491317 is 71319401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10491121 + 196 = 3239^2 + 14^2 .

It is an emirp because it is prime and its reverse (71319401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10491317 - 2⁶ = 10491253 is a prime.

It is a super-2 number, since 2×10491317² = 220135464788978, which contains 22 as substring.

Together with 10491319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10491319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5245658 + 5245659.

It is an arithmetic number, because the mean of its divisors is an integer number (5245659).

Almost surely, 2^10491317 is an apocalyptic number.

It is an amenable number.

10491317 is a deficient number, since it is larger than the sum of its proper divisors (1).

10491317 is an equidigital number, since it uses as much as digits as its factorization.

10491317 is an evil number, because the sum of its binary digits is even.

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

The square root of 10491317 is about 3239.0302561106. The cubic root of 10491317 is about 218.9155794519.

The spelling of 10491317 in words is "ten million, four hundred ninety-one thousand, three hundred seventeen".