1311224099 has 2 divisors, whose sum is σ = 1311224100. Its totient is φ = 1311224098.

The previous prime is 1311224041. The next prime is 1311224107. The reversal of 1311224099 is 9904221131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311224099 - 2²⁰ = 1310175523 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311224039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655612049 + 655612050.

It is an arithmetic number, because the mean of its divisors is an integer number (655612050).

Almost surely, 2^1311224099 is an apocalyptic number.

1311224099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311224099 is an equidigital number, since it uses as much as digits as its factorization.

1311224099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1311224099 is about 36210.8284771282. The cubic root of 1311224099 is about 1094.5248869084.

The spelling of 1311224099 in words is "one billion, three hundred eleven million, two hundred twenty-four thousand, ninety-nine".