231122133 has 32 divisors (see below), whose sum is σ = 375196800. Its totient is φ = 139449600.

The previous prime is 231122131. The next prime is 231122149. The reversal of 231122133 is 331221132.

It is not a de Polignac number, because 231122133 - 2¹ = 231122131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231122131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69963 + ... + 73191.

It is an arithmetic number, because the mean of its divisors is an integer number (11724900).

Almost surely, 2^231122133 is an apocalyptic number.

It is an amenable number.

231122133 is a deficient number, since it is larger than the sum of its proper divisors (144074667).

231122133 is a wasteful number, since it uses less digits than its factorization.

231122133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490 (or 3484 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 231122133 is about 15202.7015033513. The cubic root of 231122133 is about 613.6873609513.

Adding to 231122133 its reverse (331221132), we get a palindrome (562343265).

The spelling of 231122133 in words is "two hundred thirty-one million, one hundred twenty-two thousand, one hundred thirty-three".