13312863 has 16 divisors (see below), whose sum is σ = 20761600. Its totient is φ = 8407800.

The previous prime is 13312841. The next prime is 13312879. The reversal of 13312863 is 36821331.

It is a happy number.

It is not a de Polignac number, because 13312863 - 2²² = 9118559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12463 + ... + 13488.

It is an arithmetic number, because the mean of its divisors is an integer number (1297600).

Almost surely, 2^13312863 is an apocalyptic number.

13312863 is a deficient number, since it is larger than the sum of its proper divisors (7448737).

13312863 is a wasteful number, since it uses less digits than its factorization.

13312863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25979 (or 25973 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 13312863 is about 3648.6796241928. The cubic root of 13312863 is about 237.0048068245.

It can be divided in two parts, 133 and 12863, that added together give a square (12996 = 114²).

The spelling of 13312863 in words is "thirteen million, three hundred twelve thousand, eight hundred sixty-three".