233121204 has 36 divisors (see below), whose sum is σ = 623943684. Its totient is φ = 73135872.

The previous prime is 233121173. The next prime is 233121211. The reversal of 233121204 is 402121332.

233121204 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 109244304 + 123876900 = 10452^2 + 11130^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189847 + ... + 191070.

It is an arithmetic number, because the mean of its divisors is an integer number (17331769).

Almost surely, 2^233121204 is an apocalyptic number.

It is an amenable number.

233121204 is an abundant number, since it is smaller than the sum of its proper divisors (390822480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

233121204 is a wasteful number, since it uses less digits than its factorization.

233121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380944 (or 380939 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 233121204 is about 15268.3071753224. The cubic root of 233121204 is about 615.4516293960.

Adding to 233121204 its reverse (402121332), we get a palindrome (635242536).

The spelling of 233121204 in words is "two hundred thirty-three million, one hundred twenty-one thousand, two hundred four".