13013723 has 4 divisors (see below), whose sum is σ = 13048440. Its totient is φ = 12979008.

The previous prime is 13013717. The next prime is 13013731. The reversal of 13013723 is 32731031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32731031 = 103 ⋅317777.

It is a cyclic number.

It is not a de Polignac number, because 13013723 - 2⁶ = 13013659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13013695 and 13013704.

It is not an unprimeable number, because it can be changed into a prime (13013713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16790 + ... + 17547.

It is an arithmetic number, because the mean of its divisors is an integer number (3262110).

Almost surely, 2^13013723 is an apocalyptic number.

13013723 is a deficient number, since it is larger than the sum of its proper divisors (34717).

13013723 is an equidigital number, since it uses as much as digits as its factorization.

13013723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34716.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 13013723 is about 3607.4538112081. The cubic root of 13013723 is about 235.2161765121.

Adding to 13013723 its reverse (32731031), we get a palindrome (45744754).

The spelling of 13013723 in words is "thirteen million, thirteen thousand, seven hundred twenty-three".