12313445 has 4 divisors (see below), whose sum is σ = 14776140. Its totient is φ = 9850752.

The previous prime is 12313409. The next prime is 12313447. The reversal of 12313445 is 54431321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54431321 = 7 ⋅7775903.

It can be written as a sum of positive squares in 2 ways, for example, as 3751969 + 8561476 = 1937^2 + 2926^2 .

It is a cyclic number.

It is not a de Polignac number, because 12313445 - 2⁶ = 12313381 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12313445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313447) 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, 1231340 + ... + 1231349.

It is an arithmetic number, because the mean of its divisors is an integer number (3694035).

Almost surely, 2^12313445 is an apocalyptic number.

It is an amenable number.

12313445 is a deficient number, since it is larger than the sum of its proper divisors (2462695).

12313445 is an equidigital number, since it uses as much as digits as its factorization.

12313445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462694.

The product of its digits is 1440, while the sum is 23.

The square root of 12313445 is about 3509.0518662454. The cubic root of 12313445 is about 230.9191011232.

Adding to 12313445 its reverse (54431321), we get a palindrome (66744766).

The spelling of 12313445 in words is "twelve million, three hundred thirteen thousand, four hundred forty-five".