231330002321 has 24 divisors (see below), whose sum is σ = 260205456000. Its totient is φ = 205410538080.

The previous prime is 231330002297. The next prime is 231330002329. The reversal of 231330002321 is 123200033132.

It is a de Polignac number, because none of the positive numbers 2^k-231330002321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231330002293 and 231330002302.

It is not an unprimeable number, because it can be changed into a prime (231330002329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2797055 + ... + 2878571.

It is an arithmetic number, because the mean of its divisors is an integer number (10841894000).

Almost surely, 2^231330002321 is an apocalyptic number.

It is an amenable number.

231330002321 is a deficient number, since it is larger than the sum of its proper divisors (28875453679).

231330002321 is a wasteful number, since it uses less digits than its factorization.

231330002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82085 (or 82074 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 231330002321 its reverse (123200033132), we get a palindrome (354530035453).

The spelling of 231330002321 in words is "two hundred thirty-one billion, three hundred thirty million, two thousand, three hundred twenty-one".