23031001330221 has 4 divisors (see below), whose sum is σ = 30708001773632. Its totient is φ = 15354000886812.

The previous prime is 23031001330219. The next prime is 23031001330243. The reversal of 23031001330221 is 12203310013032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23031001330221 - 2¹ = 23031001330219 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 (23031001330721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3838500221701 + ... + 3838500221706.

It is an arithmetic number, because the mean of its divisors is an integer number (7677000443408).

Almost surely, 2^{23031001330221} is an apocalyptic number.

It is an amenable number.

23031001330221 is a deficient number, since it is larger than the sum of its proper divisors (7677000443411).

23031001330221 is an equidigital number, since it uses as much as digits as its factorization.

23031001330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7677000443410.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23031001330221 its reverse (12203310013032), we get a palindrome (35234311343253).

The spelling of 23031001330221 in words is "twenty-three trillion, thirty-one billion, one million, three hundred thirty thousand, two hundred twenty-one".