231333121101 has 32 divisors (see below), whose sum is σ = 340836450048. Its totient is φ = 138819338240.

The previous prime is 231333121099. The next prime is 231333121139. The reversal of 231333121101 is 101121333132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 231333121101 - 2¹ = 231333121099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231333121141) 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, 14256745 + ... + 14272961.

It is an arithmetic number, because the mean of its divisors is an integer number (10651139064).

Almost surely, 2^231333121101 is an apocalyptic number.

It is an amenable number.

231333121101 is a deficient number, since it is larger than the sum of its proper divisors (109503328947).

231333121101 is a wasteful number, since it uses less digits than its factorization.

231333121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28421.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 231333121101 its reverse (101121333132), we get a palindrome (332454454233).

The spelling of 231333121101 in words is "two hundred thirty-one billion, three hundred thirty-three million, one hundred twenty-one thousand, one hundred one".