13123345 has 8 divisors (see below), whose sum is σ = 16173864. Its totient is φ = 10214784.

The previous prime is 13123343. The next prime is 13123349. The reversal of 13123345 is 54332131.

It can be written as a sum of positive squares in 4 ways, for example, as 2047761 + 11075584 = 1431^2 + 3328^2 .

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 13123345 - 2¹ = 13123343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13123343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35284 + ... + 35653.

It is an arithmetic number, because the mean of its divisors is an integer number (2021733).

Almost surely, 2^13123345 is an apocalyptic number.

It is an amenable number.

13123345 is a deficient number, since it is larger than the sum of its proper divisors (3050519).

13123345 is an equidigital number, since it uses as much as digits as its factorization.

13123345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70979.

The product of its digits is 1080, while the sum is 22.

The square root of 13123345 is about 3622.6157676464. The cubic root of 13123345 is about 235.8747839533.

Adding to 13123345 its reverse (54332131), we get a palindrome (67455476).

The spelling of 13123345 in words is "thirteen million, one hundred twenty-three thousand, three hundred forty-five".