231321123133 has 8 divisors (see below), whose sum is σ = 237105662976. Its totient is φ = 225543372000.

The previous prime is 231321123101. The next prime is 231321123149. The reversal of 231321123133 is 331321123132.

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 231321123133 - 2⁵ = 231321123101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231321123098 and 231321123107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321123193) 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, 1628143 + ... + 1764508.

It is an arithmetic number, because the mean of its divisors is an integer number (29638207872).

Almost surely, 2^231321123133 is an apocalyptic number.

It is an amenable number.

231321123133 is a deficient number, since it is larger than the sum of its proper divisors (5784539843).

231321123133 is a wasteful number, since it uses less digits than its factorization.

231321123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394355.

The product of its digits is 1944, while the sum is 25.

Adding to 231321123133 its reverse (331321123132), we get a palindrome (562642246265).

Subtracting 231321123133 from its reverse (331321123132), we obtain a palindrome (99999999999).

The spelling of 231321123133 in words is "two hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, one hundred thirty-three".