13213653 has 4 divisors (see below), whose sum is σ = 17618208. Its totient is φ = 8809100.

The previous prime is 13213579. The next prime is 13213667. The reversal of 13213653 is 35631231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35631231 = 3 ⋅11877077.

It is a cyclic number.

It is not a de Polignac number, because 13213653 - 2¹⁰ = 13212629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213153) 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, 2202273 + ... + 2202278.

It is an arithmetic number, because the mean of its divisors is an integer number (4404552).

Almost surely, 2^13213653 is an apocalyptic number.

It is an amenable number.

13213653 is a deficient number, since it is larger than the sum of its proper divisors (4404555).

13213653 is an equidigital number, since it uses as much as digits as its factorization.

13213653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404554.

The product of its digits is 1620, while the sum is 24.

The square root of 13213653 is about 3635.0588716003. The cubic root of 13213653 is about 236.4146032418.

Adding to 13213653 its reverse (35631231), we get a palindrome (48844884).

The spelling of 13213653 in words is "thirteen million, two hundred thirteen thousand, six hundred fifty-three".