231343004221 has 8 divisors (see below), whose sum is σ = 279944475840. Its totient is φ = 186629650368.

The previous prime is 231343004183. The next prime is 231343004257. The reversal of 231343004221 is 122400343132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231343004221 - 2¹¹ = 231343002173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231343004621) 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, 972029311 + ... + 972029548.

It is an arithmetic number, because the mean of its divisors is an integer number (34993059480).

Almost surely, 2^231343004221 is an apocalyptic number.

It is an amenable number.

231343004221 is a deficient number, since it is larger than the sum of its proper divisors (48601471619).

231343004221 is a wasteful number, since it uses less digits than its factorization.

231343004221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944058883.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 231343004221 its reverse (122400343132), we get a palindrome (353743347353).

The spelling of 231343004221 in words is "two hundred thirty-one billion, three hundred forty-three million, four thousand, two hundred twenty-one".