1213323199 has 16 divisors (see below), whose sum is σ = 1373523840. Its totient is φ = 1061676000.

The previous prime is 1213323193. The next prime is 1213323247. The reversal of 1213323199 is 9913233121.

It is not a de Polignac number, because 1213323199 - 2³ = 1213323191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213323191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99844 + ... + 111334.

It is an arithmetic number, because the mean of its divisors is an integer number (85845240).

Almost surely, 2^1213323199 is an apocalyptic number.

1213323199 is a deficient number, since it is larger than the sum of its proper divisors (160200641).

1213323199 is a wasteful number, since it uses less digits than its factorization.

1213323199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11862.

The product of its digits is 8748, while the sum is 34.

The square root of 1213323199 is about 34832.7891360999. The cubic root of 1213323199 is about 1066.5768845113.

The spelling of 1213323199 in words is "one billion, two hundred thirteen million, three hundred twenty-three thousand, one hundred ninety-nine".