11997319 has 2 divisors, whose sum is σ = 11997320. Its totient is φ = 11997318.

The previous prime is 11997311. The next prime is 11997343. The reversal of 11997319 is 91379911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11997319 - 2³ = 11997311 is a prime.

It is a super-2 number, since 2×11997319² = 287871326375522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11997311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5998659 + 5998660.

It is an arithmetic number, because the mean of its divisors is an integer number (5998660).

Almost surely, 2^11997319 is an apocalyptic number.

11997319 is a deficient number, since it is larger than the sum of its proper divisors (1).

11997319 is an equidigital number, since it uses as much as digits as its factorization.

11997319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15309, while the sum is 40.

The square root of 11997319 is about 3463.7146245036. The cubic root of 11997319 is about 228.9257973581.

The spelling of 11997319 in words is "eleven million, nine hundred ninety-seven thousand, three hundred nineteen".