231211324 has 12 divisors (see below), whose sum is σ = 411478200. Its totient is φ = 113646128.

The previous prime is 231211291. The next prime is 231211327. The reversal of 231211324 is 423112132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231211327) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 489619 + ... + 490090.

It is an arithmetic number, because the mean of its divisors is an integer number (34289850).

Almost surely, 2^231211324 is an apocalyptic number.

It is an amenable number.

231211324 is a deficient number, since it is larger than the sum of its proper divisors (180266876).

231211324 is a wasteful number, since it uses less digits than its factorization.

231211324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979772 (or 979770 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 231211324 is about 15205.6346135240. The cubic root of 231211324 is about 613.7662923073.

Adding to 231211324 its reverse (423112132), we get a palindrome (654323456).

The spelling of 231211324 in words is "two hundred thirty-one million, two hundred eleven thousand, three hundred twenty-four".