223013729 has 2 divisors, whose sum is σ = 223013730. Its totient is φ = 223013728.

The previous prime is 223013723. The next prime is 223013753. The reversal of 223013729 is 927310322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132250000 + 90763729 = 11500^2 + 9527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223013729 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (223013723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111506864 + 111506865.

It is an arithmetic number, because the mean of its divisors is an integer number (111506865).

Almost surely, 2^223013729 is an apocalyptic number.

It is an amenable number.

223013729 is a deficient number, since it is larger than the sum of its proper divisors (1).

223013729 is an equidigital number, since it uses as much as digits as its factorization.

223013729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 223013729 is about 14933.6441969132. The cubic root of 223013729 is about 606.4251437991.

The spelling of 223013729 in words is "two hundred twenty-three million, thirteen thousand, seven hundred twenty-nine".