231323213211 has 8 divisors (see below), whose sum is σ = 308434245120. Its totient is φ = 154213828392.

The previous prime is 231323213189. The next prime is 231323213213. The reversal of 231323213211 is 112312323132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231323213211 - 2⁹ = 231323212699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231323213213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34755 + ... + 681068.

It is an arithmetic number, because the mean of its divisors is an integer number (38554280640).

Almost surely, 2^231323213211 is an apocalyptic number.

231323213211 is a deficient number, since it is larger than the sum of its proper divisors (77111031909).

231323213211 is a wasteful number, since it uses less digits than its factorization.

231323213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823545.

The product of its digits is 1296, while the sum is 24.

Adding to 231323213211 its reverse (112312323132), we get a palindrome (343635536343).

The spelling of 231323213211 in words is "two hundred thirty-one billion, three hundred twenty-three million, two hundred thirteen thousand, two hundred eleven".