233123421 has 16 divisors (see below), whose sum is σ = 320112000. Its totient is φ = 150798528.

The previous prime is 233123411. The next prime is 233123437. The reversal of 233123421 is 124321332.

It is not a de Polignac number, because 233123421 - 2⁵ = 233123389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233123411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40480 + ... + 45878.

It is an arithmetic number, because the mean of its divisors is an integer number (20007000).

Almost surely, 2^233123421 is an apocalyptic number.

It is an amenable number.

233123421 is a deficient number, since it is larger than the sum of its proper divisors (86988579).

233123421 is a wasteful number, since it uses less digits than its factorization.

233123421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5828.

The product of its digits is 864, while the sum is 21.

The square root of 233123421 is about 15268.3797765185. The cubic root of 233123421 is about 615.4535803867.

Adding to 233123421 its reverse (124321332), we get a palindrome (357444753).

It can be divided in two parts, 2331 and 23421, that added together give a palindrome (25752).

The spelling of 233123421 in words is "two hundred thirty-three million, one hundred twenty-three thousand, four hundred twenty-one".