233240321 has 2 divisors, whose sum is σ = 233240322. Its totient is φ = 233240320.

The previous prime is 233240291. The next prime is 233240327. The reversal of 233240321 is 123042332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153388225 + 79852096 = 12385^2 + 8936^2 .

It is a cyclic number.

It is not a de Polignac number, because 233240321 - 2¹⁴ = 233223937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 233240293 and 233240302.

It is not a weakly prime, because it can be changed into another prime (233240327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116620160 + 116620161.

It is an arithmetic number, because the mean of its divisors is an integer number (116620161).

Almost surely, 2^233240321 is an apocalyptic number.

It is an amenable number.

233240321 is a deficient number, since it is larger than the sum of its proper divisors (1).

233240321 is an equidigital number, since it uses as much as digits as its factorization.

233240321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 233240321 is about 15272.2074697799. The cubic root of 233240321 is about 615.5564364914.

Adding to 233240321 its reverse (123042332), we get a palindrome (356282653).

The spelling of 233240321 in words is "two hundred thirty-three million, two hundred forty thousand, three hundred twenty-one".