13012345 has 12 divisors (see below), whose sum is σ = 16056684. Its totient is φ = 10123200.

The previous prime is 13012333. The next prime is 13012367. The reversal of 13012345 is 54321031.

13012345 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 246016 + 12766329 = 496^2 + 3573^2 .

It is not a de Polignac number, because 13012345 - 2⁷ = 13012217 is a prime.

It is a super-2 number, since 2×13012345² = 338642244798050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5895 + ... + 7795.

It is an arithmetic number, because the mean of its divisors is an integer number (1338057).

Almost surely, 2^13012345 is an apocalyptic number.

It is an amenable number.

13012345 is a deficient number, since it is larger than the sum of its proper divisors (3044339).

13012345 is an equidigital number, since it uses as much as digits as its factorization.

13012345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13012345 is about 3607.2628127155. The cubic root of 13012345 is about 235.2078740114.

Adding to 13012345 its reverse (54321031), we get a palindrome (67333376).

The spelling of 13012345 in words is "thirteen million, twelve thousand, three hundred forty-five".