223443881 has 2 divisors, whose sum is σ = 223443882. Its totient is φ = 223443880.

The previous prime is 223443863. The next prime is 223443893. The reversal of 223443881 is 188344322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213306025 + 10137856 = 14605^2 + 3184^2 .

It is a cyclic number.

It is not a de Polignac number, because 223443881 - 2²⁶ = 156335017 is a prime.

It is a super-2 number, since 2×223443881² = 99854335912684322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (223443821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111721940 + 111721941.

It is an arithmetic number, because the mean of its divisors is an integer number (111721941).

Almost surely, 2^223443881 is an apocalyptic number.

It is an amenable number.

223443881 is a deficient number, since it is larger than the sum of its proper divisors (1).

223443881 is an equidigital number, since it uses as much as digits as its factorization.

223443881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 35.

The square root of 223443881 is about 14948.0393697635. The cubic root of 223443881 is about 606.8147871566.

The spelling of 223443881 in words is "two hundred twenty-three million, four hundred forty-three thousand, eight hundred eighty-one".