23121331311331 has 8 divisors (see below), whose sum is σ = 25483304239344. Its totient is φ = 20802697336320.

The previous prime is 23121331311229. The next prime is 23121331311341. The reversal of 23121331311331 is 13311313312132.

It is a happy number.

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 23121331311331 - 2³¹ = 23119183827683 is a prime.

It is a super-2 number, since 2×23121331311331² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23121331311331.

It is not an unprimeable number, because it can be changed into a prime (23121331311341) 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, 10834737130 + ... + 10834739263.

It is an arithmetic number, because the mean of its divisors is an integer number (3185413029918).

Almost surely, 2^{23121331311331} is an apocalyptic number.

23121331311331 is a deficient number, since it is larger than the sum of its proper divisors (2361972928013).

23121331311331 is a wasteful number, since it uses less digits than its factorization.

23121331311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21669476501.

The product of its digits is 2916, while the sum is 28.

Adding to 23121331311331 its reverse (13311313312132), we get a palindrome (36432644623463).

The spelling of 23121331311331 in words is "twenty-three trillion, one hundred twenty-one billion, three hundred thirty-one million, three hundred eleven thousand, three hundred thirty-one".