231212204 has 24 divisors (see below), whose sum is σ = 420837648. Its totient is φ = 111061440.

The previous prime is 231212171. The next prime is 231212213. The reversal of 231212204 is 402212132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527 + ... + 21510.

It is an arithmetic number, because the mean of its divisors is an integer number (17534902).

Almost surely, 2^231212204 is an apocalyptic number.

It is an amenable number.

231212204 is a deficient number, since it is larger than the sum of its proper divisors (189625444).

231212204 is a wasteful number, since it uses less digits than its factorization.

231212204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22145 (or 22143 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 231212204 is about 15205.6635501382. The cubic root of 231212204 is about 613.7670709797.

Adding to 231212204 its reverse (402212132), we get a palindrome (633424336).

The spelling of 231212204 in words is "two hundred thirty-one million, two hundred twelve thousand, two hundred four".