233343421 has 2 divisors, whose sum is σ = 233343422. Its totient is φ = 233343420.

The previous prime is 233343419. The next prime is 233343437. The reversal of 233343421 is 124343332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153884025 + 79459396 = 12405^2 + 8914^2 .

It is a cyclic number.

It is not a de Polignac number, because 233343421 - 2¹ = 233343419 is a prime.

Together with 233343419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233343401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116671710 + 116671711.

It is an arithmetic number, because the mean of its divisors is an integer number (116671711).

Almost surely, 2^233343421 is an apocalyptic number.

It is an amenable number.

233343421 is a deficient number, since it is larger than the sum of its proper divisors (1).

233343421 is an equidigital number, since it uses as much as digits as its factorization.

233343421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 25.

The square root of 233343421 is about 15275.5825093513. The cubic root of 233343421 is about 615.6471219549.

Adding to 233343421 its reverse (124343332), we get a palindrome (357686753).

It can be divided in two parts, 2333 and 43421, that added together give a palindrome (45754).

The spelling of 233343421 in words is "two hundred thirty-three million, three hundred forty-three thousand, four hundred twenty-one".