13643371 has 4 divisors (see below), whose sum is σ = 15592432. Its totient is φ = 11694312.

The previous prime is 13643353. The next prime is 13643407. The reversal of 13643371 is 17334631.

It is a happy number.

13643371 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17334631 = 19 ⋅912349.

It is not a de Polignac number, because 13643371 - 2⁵ = 13643339 is a prime.

It is a super-2 number, since 2×13643371² = 372283144487282, which contains 22 as substring.

It is a Duffinian number.

13643371 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (13643351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974520 + ... + 974533.

It is an arithmetic number, because the mean of its divisors is an integer number (3898108).

Almost surely, 2^13643371 is an apocalyptic number.

13643371 is a deficient number, since it is larger than the sum of its proper divisors (1949061).

13643371 is an equidigital number, since it uses as much as digits as its factorization.

13643371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949060.

The product of its digits is 4536, while the sum is 28.

The square root of 13643371 is about 3693.6934090420. The cubic root of 13643371 is about 238.9501071719.

The spelling of 13643371 in words is "thirteen million, six hundred forty-three thousand, three hundred seventy-one".