13231343366 has 4 divisors (see below), whose sum is σ = 19847015052. Its totient is φ = 6615671682.

The previous prime is 13231343341. The next prime is 13231343369. The reversal of 13231343366 is 66334313231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231343369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3307835840 + ... + 3307835843.

It is an arithmetic number, because the mean of its divisors is an integer number (4961753763).

Almost surely, 2^13231343366 is an apocalyptic number.

13231343366 is a deficient number, since it is larger than the sum of its proper divisors (6615671686).

13231343366 is an equidigital number, since it uses as much as digits as its factorization.

13231343366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6615671685.

The product of its digits is 69984, while the sum is 35.

Adding to 13231343366 its reverse (66334313231), we get a palindrome (79565656597).

The spelling of 13231343366 in words is "thirteen billion, two hundred thirty-one million, three hundred forty-three thousand, three hundred sixty-six".