223857387233 has 2 divisors, whose sum is σ = 223857387234. Its totient is φ = 223857387232.

The previous prime is 223857387167. The next prime is 223857387253. The reversal of 223857387233 is 332783758322.

223857387233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209698053184 + 14159334049 = 457928^2 + 118993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223857387233 is a prime.

It is a super-2 number, since 2×223857387233² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (223857387253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111928693616 + 111928693617.

It is an arithmetic number, because the mean of its divisors is an integer number (111928693617).

Almost surely, 2^223857387233 is an apocalyptic number.

It is an amenable number.

223857387233 is a deficient number, since it is larger than the sum of its proper divisors (1).

223857387233 is an equidigital number, since it uses as much as digits as its factorization.

223857387233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10160640, while the sum is 53.

The spelling of 223857387233 in words is "two hundred twenty-three billion, eight hundred fifty-seven million, three hundred eighty-seven thousand, two hundred thirty-three".