13320963 has 8 divisors (see below), whose sum is σ = 19734800. Its totient is φ = 8880624.

The previous prime is 13320959. The next prime is 13320971. The reversal of 13320963 is 36902331.

It is not a de Polignac number, because 13320963 - 2² = 13320959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 493369 = 13320963 / (1 + 3 + 3 + 2 + 0 + 9 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13320953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246658 + ... + 246711.

It is an arithmetic number, because the mean of its divisors is an integer number (2466850).

Almost surely, 2^13320963 is an apocalyptic number.

13320963 is a deficient number, since it is larger than the sum of its proper divisors (6413837).

13320963 is an equidigital number, since it uses as much as digits as its factorization.

13320963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493378 (or 493372 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 13320963 is about 3649.7894459818. The cubic root of 13320963 is about 237.0528643490.

The spelling of 13320963 in words is "thirteen million, three hundred twenty thousand, nine hundred sixty-three".