13321147 has 16 divisors (see below), whose sum is σ = 16464640. Its totient is φ = 10520928.

The previous prime is 13321129. The next prime is 13321151. The reversal of 13321147 is 74112331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13321147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13321127) 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, 3568 + ... + 6274.

It is an arithmetic number, because the mean of its divisors is an integer number (1029040).

Almost surely, 2^13321147 is an apocalyptic number.

13321147 is a deficient number, since it is larger than the sum of its proper divisors (3143493).

13321147 is a wasteful number, since it uses less digits than its factorization.

13321147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770.

The product of its digits is 504, while the sum is 22.

The square root of 13321147 is about 3649.8146528283. The cubic root of 13321147 is about 237.0539557998.

Adding to 13321147 its reverse (74112331), we get a palindrome (87433478).

The spelling of 13321147 in words is "thirteen million, three hundred twenty-one thousand, one hundred forty-seven".