13331945 has 8 divisors (see below), whose sum is σ = 17452800. Its totient is φ = 9695920.

The previous prime is 13331921. The next prime is 13331957. The reversal of 13331945 is 54913331.

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

It is not a de Polignac number, because 13331945 - 2¹⁸ = 13069801 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121145 + ... + 121254.

It is an arithmetic number, because the mean of its divisors is an integer number (2181600).

Almost surely, 2^13331945 is an apocalyptic number.

It is an amenable number.

13331945 is a deficient number, since it is larger than the sum of its proper divisors (4120855).

13331945 is a wasteful number, since it uses less digits than its factorization.

13331945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242415.

The product of its digits is 4860, while the sum is 29.

The square root of 13331945 is about 3651.2936063812. The cubic root of 13331945 is about 237.1179897578.

The spelling of 13331945 in words is "thirteen million, three hundred thirty-one thousand, nine hundred forty-five".