231331010111 has 16 divisors (see below), whose sum is σ = 238108336128. Its totient is φ = 224674665600.

The previous prime is 231331010089. The next prime is 231331010123. The reversal of 231331010111 is 111010133132.

It is a cyclic number.

It is not a de Polignac number, because 231331010111 - 2⁶ = 231331010047 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 231331010111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231331010171) 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 15 ways as a sum of consecutive naturals, for example, 1313975 + ... + 1479591.

It is an arithmetic number, because the mean of its divisors is an integer number (14881771008).

Almost surely, 2^231331010111 is an apocalyptic number.

231331010111 is a deficient number, since it is larger than the sum of its proper divisors (6777326017).

231331010111 is a wasteful number, since it uses less digits than its factorization.

231331010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165982.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 231331010111 its reverse (111010133132), we get a palindrome (342341143243).

The spelling of 231331010111 in words is "two hundred thirty-one billion, three hundred thirty-one million, ten thousand, one hundred eleven".