13215345 has 64 divisors (see below), whose sum is σ = 25498368. Its totient is φ = 5760000.

The previous prime is 13215337. The next prime is 13215359. The reversal of 13215345 is 54351231.

13215345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13215345 - 2³ = 13215337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130795 + ... + 130895.

It is an arithmetic number, because the mean of its divisors is an integer number (398412).

Almost surely, 2^13215345 is an apocalyptic number.

13215345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13215345 is a deficient number, since it is larger than the sum of its proper divisors (12283023).

13215345 is a wasteful number, since it uses less digits than its factorization.

13215345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194.

The product of its digits is 1800, while the sum is 24.

The square root of 13215345 is about 3635.2915976576. The cubic root of 13215345 is about 236.4246937252.

Adding to 13215345 its reverse (54351231), we get a palindrome (67566576).

It can be divided in two parts, 1321 and 5345, that added together give a palindrome (6666).

The spelling of 13215345 in words is "thirteen million, two hundred fifteen thousand, three hundred forty-five".