233221253 has 4 divisors (see below), whose sum is σ = 237621708. Its totient is φ = 228820800.

The previous prime is 233221237. The next prime is 233221273. The reversal of 233221253 is 352122332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82864609 + 150356644 = 9103^2 + 12262^2 .

It is a cyclic number.

It is not a de Polignac number, because 233221253 - 2⁴ = 233221237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233221273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2200148 + ... + 2200253.

It is an arithmetic number, because the mean of its divisors is an integer number (59405427).

Almost surely, 2^233221253 is an apocalyptic number.

It is an amenable number.

233221253 is a deficient number, since it is larger than the sum of its proper divisors (4400455).

233221253 is an equidigital number, since it uses as much as digits as its factorization.

233221253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400454.

The product of its digits is 2160, while the sum is 23.

The square root of 233221253 is about 15271.5831857735. The cubic root of 233221253 is about 615.5396615903.

Adding to 233221253 its reverse (352122332), we get a palindrome (585343585).

The spelling of 233221253 in words is "two hundred thirty-three million, two hundred twenty-one thousand, two hundred fifty-three".