13201917 has 4 divisors (see below), whose sum is σ = 17602560. Its totient is φ = 8801276.

The previous prime is 13201913. The next prime is 13201919. The reversal of 13201917 is 71910231.

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.

It is a cyclic number.

It is not a de Polignac number, because 13201917 - 2² = 13201913 is a prime.

It is a super-2 number, since 2×13201917² = 348581224949778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201913) 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, 2200317 + ... + 2200322.

It is an arithmetic number, because the mean of its divisors is an integer number (4400640).

Almost surely, 2^13201917 is an apocalyptic number.

It is an amenable number.

13201917 is a deficient number, since it is larger than the sum of its proper divisors (4400643).

13201917 is an equidigital number, since it uses as much as digits as its factorization.

13201917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400642.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 13201917 is about 3633.4442337815. Note that the first 3 decimals coincide. The cubic root of 13201917 is about 236.3445902127.

It can be divided in two parts, 13 and 201917, that added together give a triangular number (201930 = T₆₃₅).

The spelling of 13201917 in words is "thirteen million, two hundred one thousand, nine hundred seventeen".