321968011 has 2 divisors, whose sum is σ = 321968012. Its totient is φ = 321968010.

The previous prime is 321967973. The next prime is 321968027. The reversal of 321968011 is 110869123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321968011 - 2¹⁹ = 321443723 is a prime.

It is a super-2 number, since 2×321968011² = 207326800214592242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321968071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160984005 + 160984006.

It is an arithmetic number, because the mean of its divisors is an integer number (160984006).

Almost surely, 2^321968011 is an apocalyptic number.

321968011 is a deficient number, since it is larger than the sum of its proper divisors (1).

321968011 is an equidigital number, since it uses as much as digits as its factorization.

321968011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 321968011 is about 17943.4670841507. The cubic root of 321968011 is about 685.3897020638.

The spelling of 321968011 in words is "three hundred twenty-one million, nine hundred sixty-eight thousand, eleven".