231333000121 has 16 divisors (see below), whose sum is σ = 254481638400. Its totient is φ = 209310626448.

The previous prime is 231333000097. The next prime is 231333000187. The reversal of 231333000121 is 121000333132.

It is a cyclic number.

It is not a de Polignac number, because 231333000121 - 2⁹ = 231332999609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231333001121) 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, 113661 + ... + 689626.

It is an arithmetic number, because the mean of its divisors is an integer number (15905102400).

Almost surely, 2^231333000121 is an apocalyptic number.

It is an amenable number.

231333000121 is a deficient number, since it is larger than the sum of its proper divisors (23148638279).

231333000121 is a wasteful number, since it uses less digits than its factorization.

231333000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803988.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 231333000121 its reverse (121000333132), we get a palindrome (352333333253).

The spelling of 231333000121 in words is "two hundred thirty-one billion, three hundred thirty-three million, one hundred twenty-one", and thus it is an aban number.