233233421 has 4 divisors (see below), whose sum is σ = 246953052. Its totient is φ = 219513792.

The previous prime is 233233393. The next prime is 233233463. The reversal of 233233421 is 124332332.

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 130210921 + 103022500 = 11411^2 + 10150^2 .

It is not a de Polignac number, because 233233421 - 2²² = 229039117 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 (233230421) 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, 6859790 + ... + 6859823.

It is an arithmetic number, because the mean of its divisors is an integer number (61738263).

Almost surely, 2^233233421 is an apocalyptic number.

It is an amenable number.

233233421 is a deficient number, since it is larger than the sum of its proper divisors (13719631).

233233421 is a wasteful number, since it uses less digits than its factorization.

233233421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13719630.

The product of its digits is 2592, while the sum is 23.

The square root of 233233421 is about 15271.9815675635. The cubic root of 233233421 is about 615.5503663842.

Adding to 233233421 its reverse (124332332), we get a palindrome (357565753).

It can be divided in two parts, 2332 and 33421, that added together give a palindrome (35753).

The spelling of 233233421 in words is "two hundred thirty-three million, two hundred thirty-three thousand, four hundred twenty-one".