231012331211 has 4 divisors (see below), whose sum is σ = 231015007632. Its totient is φ = 231009654792.

The previous prime is 231012331189. The next prime is 231012331247. The reversal of 231012331211 is 112133210132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231012331211 - 2¹⁰ = 231012330187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231012351211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204271 + ... + 1382856.

It is an arithmetic number, because the mean of its divisors is an integer number (57753751908).

Almost surely, 2^231012331211 is an apocalyptic number.

231012331211 is a deficient number, since it is larger than the sum of its proper divisors (2676421).

231012331211 is an equidigital number, since it uses as much as digits as its factorization.

231012331211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676420.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231012331211 its reverse (112133210132), we get a palindrome (343145541343).

The spelling of 231012331211 in words is "two hundred thirty-one billion, twelve million, three hundred thirty-one thousand, two hundred eleven".