231223123133 has 8 divisors (see below), whose sum is σ = 231375917568. Its totient is φ = 231070374864.

The previous prime is 231223123123. The next prime is 231223123169. The reversal of 231223123133 is 331321322132.

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 231223123133 - 2²⁰ = 231222074557 is a prime.

It is a super-3 number, since 3×231223123133³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231223123123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19617560 + ... + 19629342.

It is an arithmetic number, because the mean of its divisors is an integer number (28921989696).

Almost surely, 2^231223123133 is an apocalyptic number.

It is an amenable number.

231223123133 is a deficient number, since it is larger than the sum of its proper divisors (152794435).

231223123133 is a wasteful number, since it uses less digits than its factorization.

231223123133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23083.

The product of its digits is 3888, while the sum is 26.

Adding to 231223123133 its reverse (331321322132), we get a palindrome (562544445265).

The spelling of 231223123133 in words is "two hundred thirty-one billion, two hundred twenty-three million, one hundred twenty-three thousand, one hundred thirty-three".