321113999 has 2 divisors, whose sum is σ = 321114000. Its totient is φ = 321113998.

The previous prime is 321113993. The next prime is 321114029. The reversal of 321113999 is 999311123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321113999 - 2¹² = 321109903 is a prime.

It is a super-2 number, since 2×321113999² = 206228400707544002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321113993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160556999 + 160557000.

It is an arithmetic number, because the mean of its divisors is an integer number (160557000).

Almost surely, 2^321113999 is an apocalyptic number.

321113999 is a deficient number, since it is larger than the sum of its proper divisors (1).

321113999 is an equidigital number, since it uses as much as digits as its factorization.

321113999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13122, while the sum is 38.

The square root of 321113999 is about 17919.6539866148. The cubic root of 321113999 is about 684.7831725335.

The spelling of 321113999 in words is "three hundred twenty-one million, one hundred thirteen thousand, nine hundred ninety-nine".