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13216369 is a prime number
BaseRepresentation
bin110010011010…
…101001110001
3220212110110011
4302122221301
511340410434
61151134521
7220223455
oct62325161
926773404
1013216369
117507721
124514441
13297984a
141a80665
151260e64
hexc9aa71

13216369 has 2 divisors, whose sum is σ = 13216370. Its totient is φ = 13216368.

The previous prime is 13216337. The next prime is 13216387. The reversal of 13216369 is 96361231.

13216369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11560000 + 1656369 = 3400^2 + 1287^2 .

It is a cyclic number.

It is not a de Polignac number, because 13216369 - 25 = 13216337 is a prime.

It is a super-2 number, since 2×132163692 = 349344819088322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13216369.

It is not a weakly prime, because it can be changed into another prime (13216069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6608184 + 6608185.

It is an arithmetic number, because the mean of its divisors is an integer number (6608185).

Almost surely, 213216369 is an apocalyptic number.

It is an amenable number.

13216369 is a deficient number, since it is larger than the sum of its proper divisors (1).

13216369 is an equidigital number, since it uses as much as digits as its factorization.

13216369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 31.

The square root of 13216369 is about 3635.4324364510. The cubic root of 13216369 is about 236.4308000769.

The spelling of 13216369 in words is "thirteen million, two hundred sixteen thousand, three hundred sixty-nine".