233423421 has 16 divisors (see below), whose sum is σ = 388028928. Its totient is φ = 121258800.

The previous prime is 233423383. The next prime is 233423453. The reversal of 233423421 is 124324332.

It is not a de Polignac number, because 233423421 - 2⁶ = 233423357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 233423391 and 233423400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233423461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505015 + ... + 505476.

It is an arithmetic number, because the mean of its divisors is an integer number (24251808).

Almost surely, 2^233423421 is an apocalyptic number.

233423421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

233423421 is a deficient number, since it is larger than the sum of its proper divisors (154605507).

233423421 is a wasteful number, since it uses less digits than its factorization.

233423421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010512.

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

The square root of 233423421 is about 15278.2008430312. The cubic root of 233423421 is about 615.7174705454.

Adding to 233423421 its reverse (124324332), we get a palindrome (357747753).

The spelling of 233423421 in words is "two hundred thirty-three million, four hundred twenty-three thousand, four hundred twenty-one".