233432421 has 16 divisors (see below), whose sum is σ = 317146368. Its totient is φ = 152683200.

The previous prime is 233432417. The next prime is 233432429. The reversal of 233432421 is 124234332.

It is not a de Polignac number, because 233432421 - 2² = 233432417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 233432391 and 233432400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233432429) 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, 82980 + ... + 85746.

It is an arithmetic number, because the mean of its divisors is an integer number (19821648).

Almost surely, 2^233432421 is an apocalyptic number.

It is an amenable number.

233432421 is a deficient number, since it is larger than the sum of its proper divisors (83713947).

233432421 is a wasteful number, since it uses less digits than its factorization.

233432421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292.

The product of its digits is 3456, while the sum is 24.

The square root of 233432421 is about 15278.4953774905. The cubic root of 233432421 is about 615.7253837559.

Adding to 233432421 its reverse (124234332), we get a palindrome (357666753).

The spelling of 233432421 in words is "two hundred thirty-three million, four hundred thirty-two thousand, four hundred twenty-one".