13453344331 has 4 divisors (see below), whose sum is σ = 15375250672. Its totient is φ = 11531437992.

The previous prime is 13453344323. The next prime is 13453344353. The reversal of 13453344331 is 13344335431.

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

It is a cyclic number.

It is not a de Polignac number, because 13453344331 - 2³ = 13453344323 is a prime.

It is a super-2 number, since 2×13453344331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13453344301) 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, 960953160 + ... + 960953173.

It is an arithmetic number, because the mean of its divisors is an integer number (3843812668).

Almost surely, 2^13453344331 is an apocalyptic number.

13453344331 is a deficient number, since it is larger than the sum of its proper divisors (1921906341).

13453344331 is an equidigital number, since it uses as much as digits as its factorization.

13453344331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921906340.

The product of its digits is 77760, while the sum is 34.

Adding to 13453344331 its reverse (13344335431), we get a palindrome (26797679762).

The spelling of 13453344331 in words is "thirteen billion, four hundred fifty-three million, three hundred forty-four thousand, three hundred thirty-one".