21231303020323 has 8 divisors (see below), whose sum is σ = 23207468046336. Its totient is φ = 19262812422600.

The previous prime is 21231303020309. The next prime is 21231303020329. The reversal of 21231303020323 is 32302030313212.

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

It is a cyclic number.

It is not a de Polignac number, because 21231303020323 - 2⁹ = 21231303019811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21231303020329) 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, 1918601283 + ... + 1918612348.

It is an arithmetic number, because the mean of its divisors is an integer number (2900933505792).

Almost surely, 2^{21231303020323} is an apocalyptic number.

21231303020323 is a deficient number, since it is larger than the sum of its proper divisors (1976165026013).

21231303020323 is a wasteful number, since it uses less digits than its factorization.

21231303020323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837214145.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21231303020323 its reverse (32302030313212), we get a palindrome (53533333333535).

The spelling of 21231303020323 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred three million, twenty thousand, three hundred twenty-three".