13303144 has 8 divisors (see below), whose sum is σ = 24943410. Its totient is φ = 6651568.

The previous prime is 13303139. The next prime is 13303153. The reversal of 13303144 is 44130331.

It can be written as a sum of positive squares in only one way, i.e., 11142244 + 2160900 = 3338^2 + 1470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831439 + ... + 831454.

Almost surely, 2^13303144 is an apocalyptic number.

It is an amenable number.

13303144 is a deficient number, since it is larger than the sum of its proper divisors (11640266).

13303144 is a wasteful number, since it uses less digits than its factorization.

13303144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662899 (or 1662895 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 13303144 is about 3647.3475293698. The cubic root of 13303144 is about 236.9471179941.

Adding to 13303144 its reverse (44130331), we get a palindrome (57433475).

The spelling of 13303144 in words is "thirteen million, three hundred three thousand, one hundred forty-four".