223331993 has 2 divisors, whose sum is σ = 223331994. Its totient is φ = 223331992.

The previous prime is 223331959. The next prime is 223332007. The reversal of 223331993 is 399133322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203547289 + 19784704 = 14267^2 + 4448^2 .

It is a cyclic number.

It is not a de Polignac number, because 223331993 - 2¹⁰ = 223330969 is a prime.

It is not a weakly prime, because it can be changed into another prime (223331923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111665996 + 111665997.

It is an arithmetic number, because the mean of its divisors is an integer number (111665997).

Almost surely, 2^223331993 is an apocalyptic number.

It is an amenable number.

223331993 is a deficient number, since it is larger than the sum of its proper divisors (1).

223331993 is an equidigital number, since it uses as much as digits as its factorization.

223331993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 35.

The square root of 223331993 is about 14944.2963367299. The cubic root of 223331993 is about 606.7134841232.

The spelling of 223331993 in words is "two hundred twenty-three million, three hundred thirty-one thousand, nine hundred ninety-three".