13381123 has 4 divisors (see below), whose sum is σ = 15292720. Its totient is φ = 11469528.

The previous prime is 13381117. The next prime is 13381153. The reversal of 13381123 is 32118331.

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

It is a de Polignac number, because none of the positive numbers 2^k-13381123 is a prime.

It is a super-2 number, since 2×13381123² = 358108905482258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13381094 and 13381103.

It is not an unprimeable number, because it can be changed into a prime (13381103) 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, 955788 + ... + 955801.

It is an arithmetic number, because the mean of its divisors is an integer number (3823180).

Almost surely, 2^13381123 is an apocalyptic number.

13381123 is a deficient number, since it is larger than the sum of its proper divisors (1911597).

13381123 is an equidigital number, since it uses as much as digits as its factorization.

13381123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911596.

The product of its digits is 432, while the sum is 22.

The square root of 13381123 is about 3658.0217331230. The cubic root of 13381123 is about 237.4091870716.

Adding to 13381123 its reverse (32118331), we get a palindrome (45499454).

The spelling of 13381123 in words is "thirteen million, three hundred eighty-one thousand, one hundred twenty-three".