13243332331 has 4 divisors (see below), whose sum is σ = 13265442000. Its totient is φ = 13221222664.

The previous prime is 13243332313. The next prime is 13243332341. The reversal of 13243332331 is 13323334231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13323334231 = 17 ⋅783725543.

It is a cyclic number.

It is not a de Polignac number, because 13243332331 - 2²⁵ = 13209777899 is a prime.

It is a super-2 number, since 2×13243332331² (a number of 21 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 13243332331.

It is not an unprimeable number, because it can be changed into a prime (13243332341) 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, 11053936 + ... + 11055133.

It is an arithmetic number, because the mean of its divisors is an integer number (3316360500).

Almost surely, 2^13243332331 is an apocalyptic number.

13243332331 is a deficient number, since it is larger than the sum of its proper divisors (22109669).

13243332331 is an equidigital number, since it uses as much as digits as its factorization.

13243332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22109668.

The product of its digits is 11664, while the sum is 28.

Adding to 13243332331 its reverse (13323334231), we get a palindrome (26566666562).

The spelling of 13243332331 in words is "thirteen billion, two hundred forty-three million, three hundred thirty-two thousand, three hundred thirty-one".