1308911 has 2 divisors, whose sum is σ = 1308912. Its totient is φ = 1308910.

The previous prime is 1308899. The next prime is 1308917. The reversal of 1308911 is 1198031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1308911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1308917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654455 + 654456.

It is an arithmetic number, because the mean of its divisors is an integer number (654456).

2^1308911 is an apocalyptic number.

1308911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308911 is an equidigital number, since it uses as much as digits as its factorization.

1308911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1308911 is about 1144.0764834573. The cubic root of 1308911 is about 109.3880899707.

The spelling of 1308911 in words is "one million, three hundred eight thousand, nine hundred eleven".