233223291809 has 2 divisors, whose sum is σ = 233223291810. Its totient is φ = 233223291808.

The previous prime is 233223291779. The next prime is 233223291817. The reversal of 233223291809 is 908192322332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181755563584 + 51467728225 = 426328^2 + 226865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233223291809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 233223291809.

It is not a weakly prime, because it can be changed into another prime (233223291869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116611645904 + 116611645905.

It is an arithmetic number, because the mean of its divisors is an integer number (116611645905).

Almost surely, 2^233223291809 is an apocalyptic number.

It is an amenable number.

233223291809 is a deficient number, since it is larger than the sum of its proper divisors (1).

233223291809 is an equidigital number, since it uses as much as digits as its factorization.

233223291809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 233223291809 in words is "two hundred thirty-three billion, two hundred twenty-three million, two hundred ninety-one thousand, eight hundred nine".