233011421 has 12 divisors (see below), whose sum is σ = 249411744. Its totient is φ = 217614600.

The previous prime is 233011357. The next prime is 233011483. The reversal of 233011421 is 124110332.

It is not a de Polignac number, because 233011421 - 2⁶ = 233011357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 233011421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233011621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21086 + ... + 30176.

It is an arithmetic number, because the mean of its divisors is an integer number (20784312).

Almost surely, 2^233011421 is an apocalyptic number.

It is an amenable number.

233011421 is a deficient number, since it is larger than the sum of its proper divisors (16400323).

233011421 is an equidigital number, since it uses as much as digits as its factorization.

233011421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9200 (or 9181 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 233011421 is about 15264.7116251831. The cubic root of 233011421 is about 615.3550033576.

Adding to 233011421 its reverse (124110332), we get a palindrome (357121753).

The spelling of 233011421 in words is "two hundred thirty-three million, eleven thousand, four hundred twenty-one".