321919883 has 2 divisors, whose sum is σ = 321919884. Its totient is φ = 321919882.

The previous prime is 321919859. The next prime is 321919889. The reversal of 321919883 is 388919123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321919883 - 2¹⁰ = 321918859 is a prime.

It is a super-2 number, since 2×321919883² = 207264822141467378, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (321919889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160959941 + 160959942.

It is an arithmetic number, because the mean of its divisors is an integer number (160959942).

Almost surely, 2^321919883 is an apocalyptic number.

321919883 is a deficient number, since it is larger than the sum of its proper divisors (1).

321919883 is an equidigital number, since it uses as much as digits as its factorization.

321919883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 44.

The square root of 321919883 is about 17942.1259331217. The cubic root of 321919883 is about 685.3555495205.

The spelling of 321919883 in words is "three hundred twenty-one million, nine hundred nineteen thousand, eight hundred eighty-three".