223923391 has 2 divisors, whose sum is σ = 223923392. Its totient is φ = 223923390.

The previous prime is 223923389. The next prime is 223923397. The reversal of 223923391 is 193329322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223923391 - 2¹ = 223923389 is a prime.

Together with 223923389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223923397) 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, 111961695 + 111961696.

It is an arithmetic number, because the mean of its divisors is an integer number (111961696).

Almost surely, 2^223923391 is an apocalyptic number.

223923391 is a deficient number, since it is larger than the sum of its proper divisors (1).

223923391 is an equidigital number, since it uses as much as digits as its factorization.

223923391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 34.

The square root of 223923391 is about 14964.0700011728. The cubic root of 223923391 is about 607.2485513484.

The spelling of 223923391 in words is "two hundred twenty-three million, nine hundred twenty-three thousand, three hundred ninety-one".