12813453 has 6 divisors (see below), whose sum is σ = 18508334. Its totient is φ = 8542296.

The previous prime is 12813413. The next prime is 12813487. The reversal of 12813453 is 35431821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10323369 + 2490084 = 3213^2 + 1578^2 .

It is not a de Polignac number, because 12813453 - 2¹⁴ = 12797069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12813403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711850 + ... + 711867.

Almost surely, 2^12813453 is an apocalyptic number.

It is an amenable number.

12813453 is a deficient number, since it is larger than the sum of its proper divisors (5694881).

12813453 is a wasteful number, since it uses less digits than its factorization.

12813453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423723 (or 1423720 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 12813453 is about 3579.5883841582. The cubic root of 12813453 is about 234.0033420518.

The spelling of 12813453 in words is "twelve million, eight hundred thirteen thousand, four hundred fifty-three".