13513123 has 8 divisors (see below), whose sum is σ = 15318800. Its totient is φ = 11816928.

The previous prime is 13513109. The next prime is 13513127. The reversal of 13513123 is 32131531.

13513123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13513123 - 2⁵ = 13513091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13513123.

It is not an unprimeable number, because it can be changed into a prime (13513127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27108 + ... + 27601.

It is an arithmetic number, because the mean of its divisors is an integer number (1914850).

Almost surely, 2^13513123 is an apocalyptic number.

13513123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13513123 is a deficient number, since it is larger than the sum of its proper divisors (1805677).

13513123 is a wasteful number, since it uses less digits than its factorization.

13513123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54741.

The product of its digits is 270, while the sum is 19.

The square root of 13513123 is about 3676.0199945049. The cubic root of 13513123 is about 238.1872863794.

Adding to 13513123 its reverse (32131531), we get a palindrome (45644654).

It can be divided in two parts, 135131 and 23, that multiplied together give a palindrome (3108013).

The spelling of 13513123 in words is "thirteen million, five hundred thirteen thousand, one hundred twenty-three".