231211204 has 18 divisors (see below), whose sum is σ = 470680350. Its totient is φ = 99090432.

The previous prime is 231211193. The next prime is 231211219. The reversal of 231211204 is 402112132.

It can be written as a sum of positive squares in only one way, i.e., 193265604 + 37945600 = 13902^2 + 6160^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 589629 + ... + 590020.

Almost surely, 2^231211204 is an apocalyptic number.

It is an amenable number.

231211204 is an abundant number, since it is smaller than the sum of its proper divisors (239469146).

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

231211204 is a wasteful number, since it uses less digits than its factorization.

231211204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179667 (or 1179658 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 231211204 is about 15205.6306676178. The cubic root of 231211204 is about 613.7661861245.

Adding to 231211204 its reverse (402112132), we get a palindrome (633323336).

The spelling of 231211204 in words is "two hundred thirty-one million, two hundred eleven thousand, two hundred four".