321133999943 has 2 divisors, whose sum is σ = 321133999944. Its totient is φ = 321133999942.

The previous prime is 321133999937. The next prime is 321134000039. The reversal of 321133999943 is 349999331123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321133999943 - 2²⁰ = 321132951367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321133996943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160566999971 + 160566999972.

It is an arithmetic number, because the mean of its divisors is an integer number (160566999972).

Almost surely, 2^321133999943 is an apocalyptic number.

321133999943 is a deficient number, since it is larger than the sum of its proper divisors (1).

321133999943 is an equidigital number, since it uses as much as digits as its factorization.

321133999943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4251528, while the sum is 56.

The spelling of 321133999943 in words is "three hundred twenty-one billion, one hundred thirty-three million, nine hundred ninety-nine thousand, nine hundred forty-three".