13201123 has 4 divisors (see below), whose sum is σ = 14216608. Its totient is φ = 12185640.

The previous prime is 13201121. The next prime is 13201127. The reversal of 13201123 is 32110231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13201123 - 2¹ = 13201121 is a prime.

It is a super-2 number, since 2×13201123² = 348539296922258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1015471 = 13201123 / (1 + 3 + 2 + 0 + 1 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13201121) 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, 507723 + ... + 507748.

It is an arithmetic number, because the mean of its divisors is an integer number (3554152).

Almost surely, 2^13201123 is an apocalyptic number.

13201123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13201123 is a deficient number, since it is larger than the sum of its proper divisors (1015485).

13201123 is a wasteful number, since it uses less digits than its factorization.

13201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015484.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 13201123 is about 3633.3349694186. The cubic root of 13201123 is about 236.3398519774.

Adding to 13201123 its reverse (32110231), we get a palindrome (45311354).

The spelling of 13201123 in words is "thirteen million, two hundred one thousand, one hundred twenty-three".