233023121 has 2 divisors, whose sum is σ = 233023122. Its totient is φ = 233023120.

The previous prime is 233023117. The next prime is 233023123. The reversal of 233023121 is 121320332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228010000 + 5013121 = 15100^2 + 2239^2 .

It is a cyclic number.

It is not a de Polignac number, because 233023121 - 2² = 233023117 is a prime.

Together with 233023123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 233023121.

It is not a weakly prime, because it can be changed into another prime (233023123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116511560 + 116511561.

It is an arithmetic number, because the mean of its divisors is an integer number (116511561).

Almost surely, 2^233023121 is an apocalyptic number.

It is an amenable number.

233023121 is a deficient number, since it is larger than the sum of its proper divisors (1).

233023121 is an equidigital number, since it uses as much as digits as its factorization.

233023121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 233023121 is about 15265.0948572225. The cubic root of 233023121 is about 615.3653026139.

Adding to 233023121 its reverse (121320332), we get a palindrome (354343453).

The spelling of 233023121 in words is "two hundred thirty-three million, twenty-three thousand, one hundred twenty-one".