13117723 has 2 divisors, whose sum is σ = 13117724. Its totient is φ = 13117722.

The previous prime is 13117711. The next prime is 13117739. The reversal of 13117723 is 32771131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13117723 - 2⁵ = 13117691 is a prime.

It is not a weakly prime, because it can be changed into another prime (13114723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6558861 + 6558862.

It is an arithmetic number, because the mean of its divisors is an integer number (6558862).

Almost surely, 2^13117723 is an apocalyptic number.

13117723 is a deficient number, since it is larger than the sum of its proper divisors (1).

13117723 is an equidigital number, since it uses as much as digits as its factorization.

13117723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882, while the sum is 25.

The square root of 13117723 is about 3621.8397258852. The cubic root of 13117723 is about 235.8410964688.

Adding to 13117723 its reverse (32771131), we get a palindrome (45888854).

The spelling of 13117723 in words is "thirteen million, one hundred seventeen thousand, seven hundred twenty-three".