231123001211 has 8 divisors (see below), whose sum is σ = 240293883984. Its totient is φ = 222120391680.

The previous prime is 231123001201. The next prime is 231123001217. The reversal of 231123001211 is 112100321132.

231123001211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 231123001211 - 2⁶ = 231123001147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231123001211.

It is not an unprimeable number, because it can be changed into a prime (231123001217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42065510 + ... + 42071003.

It is an arithmetic number, because the mean of its divisors is an integer number (30036735498).

Almost surely, 2^231123001211 is an apocalyptic number.

231123001211 is a deficient number, since it is larger than the sum of its proper divisors (9170882773).

231123001211 is an equidigital number, since it uses as much as digits as its factorization.

231123001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84136621.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 231123001211 its reverse (112100321132), we get a palindrome (343223322343).

The spelling of 231123001211 in words is "two hundred thirty-one billion, one hundred twenty-three million, one thousand, two hundred eleven".