223231999943 has 2 divisors, whose sum is σ = 223231999944. Its totient is φ = 223231999942.

The previous prime is 223231999919. The next prime is 223231999979. The reversal of 223231999943 is 349999132322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223231999943 - 2¹⁰ = 223231998919 is a prime.

It is a super-3 number, since 3×223231999943³ (a number of 35 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223231999043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111615999971 + 111615999972.

It is an arithmetic number, because the mean of its divisors is an integer number (111615999972).

Almost surely, 2^223231999943 is an apocalyptic number.

223231999943 is a deficient number, since it is larger than the sum of its proper divisors (1).

223231999943 is an equidigital number, since it uses as much as digits as its factorization.

223231999943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5668704, while the sum is 56.

The spelling of 223231999943 in words is "two hundred twenty-three billion, two hundred thirty-one million, nine hundred ninety-nine thousand, nine hundred forty-three".