231443321001 has 32 divisors (see below), whose sum is σ = 326023391232. Its totient is φ = 145748190720.

The previous prime is 231443320897. The next prime is 231443321063. The reversal of 231443321001 is 100123344132.

It is a happy number.

It is not a de Polignac number, because 231443321001 - 2¹⁰ = 231443319977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231443321801) 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, 16618521 + ... + 16632441.

It is an arithmetic number, because the mean of its divisors is an integer number (10188230976).

Almost surely, 2^231443321001 is an apocalyptic number.

It is an amenable number.

231443321001 is a deficient number, since it is larger than the sum of its proper divisors (94580070231).

231443321001 is a wasteful number, since it uses less digits than its factorization.

231443321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16933.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 231443321001 its reverse (100123344132), we get a palindrome (331566665133).

The spelling of 231443321001 in words is "two hundred thirty-one billion, four hundred forty-three million, three hundred twenty-one thousand, one".