123231204 has 36 divisors (see below), whose sum is σ = 311943996. Its totient is φ = 41018688.

The previous prime is 123231203. The next prime is 123231209. The reversal of 123231204 is 402132321.

It can be written as a sum of positive squares in 2 ways, for example, as 51151104 + 72080100 = 7152^2 + 8490^2 .

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 not an unprimeable number, because it can be changed into a prime (123231203) 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, 28702 + ... + 32714.

It is an arithmetic number, because the mean of its divisors is an integer number (8665111).

Almost surely, 2^123231204 is an apocalyptic number.

It is an amenable number.

123231204 is an abundant number, since it is smaller than the sum of its proper divisors (188712792).

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

123231204 is a wasteful number, since it uses less digits than its factorization.

123231204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4876 (or 4871 counting only the distinct ones).

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

The square root of 123231204 is about 11100.9550940448. The cubic root of 123231204 is about 497.6303929992.

Adding to 123231204 its reverse (402132321), we get a palindrome (525363525).

The spelling of 123231204 in words is "one hundred twenty-three million, two hundred thirty-one thousand, two hundred four".