12013345 has 8 divisors (see below), whose sum is σ = 14805864. Its totient is φ = 9350784.

The previous prime is 12013333. The next prime is 12013361. The reversal of 12013345 is 54331021.

It can be written as a sum of positive squares in 4 ways, for example, as 5803281 + 6210064 = 2409^2 + 2492^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12013345 - 2¹¹ = 12011297 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 32284 + ... + 32653.

It is an arithmetic number, because the mean of its divisors is an integer number (1850733).

Almost surely, 2^12013345 is an apocalyptic number.

It is an amenable number.

12013345 is a deficient number, since it is larger than the sum of its proper divisors (2792519).

12013345 is an equidigital number, since it uses as much as digits as its factorization.

12013345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64979.

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

The square root of 12013345 is about 3466.0272647514. The cubic root of 12013345 is about 229.0276849121.

Adding to 12013345 its reverse (54331021), we get a palindrome (66344366).

The spelling of 12013345 in words is "twelve million, thirteen thousand, three hundred forty-five".