13136723 has 4 divisors (see below), whose sum is σ = 13264368. Its totient is φ = 13009080.

The previous prime is 13136713. The next prime is 13136737. The reversal of 13136723 is 32763131.

13136723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13136723 - 2¹⁴ = 13120339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13136692 and 13136701.

It is not an unprimeable number, because it can be changed into a prime (13136713) 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, 63668 + ... + 63873.

It is an arithmetic number, because the mean of its divisors is an integer number (3316092).

Almost surely, 2^13136723 is an apocalyptic number.

13136723 is a deficient number, since it is larger than the sum of its proper divisors (127645).

13136723 is a wasteful number, since it uses less digits than its factorization.

13136723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127644.

The product of its digits is 2268, while the sum is 26.

The square root of 13136723 is about 3624.4617531435. The cubic root of 13136723 is about 235.9549073571.

Adding to 13136723 its reverse (32763131), we get a palindrome (45899854).

The spelling of 13136723 in words is "thirteen million, one hundred thirty-six thousand, seven hundred twenty-three".