223423729 has 2 divisors, whose sum is σ = 223423730. Its totient is φ = 223423728.

The previous prime is 223423709. The next prime is 223423751. The reversal of 223423729 is 927324322.

223423729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222815329 + 608400 = 14927^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 223423729 - 2⁷ = 223423601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223423694 and 223423703.

It is not a weakly prime, because it can be changed into another prime (223423709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111711864 + 111711865.

It is an arithmetic number, because the mean of its divisors is an integer number (111711865).

Almost surely, 2^223423729 is an apocalyptic number.

It is an amenable number.

223423729 is a deficient number, since it is larger than the sum of its proper divisors (1).

223423729 is an equidigital number, since it uses as much as digits as its factorization.

223423729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 34.

The square root of 223423729 is about 14947.3652862302. The cubic root of 223423729 is about 606.7965440983.

The spelling of 223423729 in words is "two hundred twenty-three million, four hundred twenty-three thousand, seven hundred twenty-nine".