231133122311 has 16 divisors (see below), whose sum is σ = 284753582400. Its totient is φ = 182693242368.

The previous prime is 231133122299. The next prime is 231133122331. The reversal of 231133122311 is 113221331132.

It is a de Polignac number, because none of the positive numbers 2^k-231133122311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231133122331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1166816 + ... + 1350453.

It is an arithmetic number, because the mean of its divisors is an integer number (17797098900).

Almost surely, 2^231133122311 is an apocalyptic number.

231133122311 is a deficient number, since it is larger than the sum of its proper divisors (53620460089).

231133122311 is a wasteful number, since it uses less digits than its factorization.

231133122311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518298.

The product of its digits is 648, while the sum is 23.

Adding to 231133122311 its reverse (113221331132), we get a palindrome (344354453443).

The spelling of 231133122311 in words is "two hundred thirty-one billion, one hundred thirty-three million, one hundred twenty-two thousand, three hundred eleven".