13023905 has 8 divisors (see below), whose sum is σ = 15743592. Its totient is φ = 10342528.

The previous prime is 13023893. The next prime is 13023919. The reversal of 13023905 is 50932031.

It is a happy number.

13023905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6241 + 13017664 = 79^2 + 3608^2 .

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 13023905 - 2¹⁰ = 13022881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8822 + ... + 10191.

It is an arithmetic number, because the mean of its divisors is an integer number (1967949).

Almost surely, 2^13023905 is an apocalyptic number.

It is an amenable number.

13023905 is a deficient number, since it is larger than the sum of its proper divisors (2719687).

13023905 is a wasteful number, since it uses less digits than its factorization.

13023905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19155.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 13023905 is about 3608.8647799550. The cubic root of 13023905 is about 235.2775052794.

Adding to 13023905 its reverse (50932031), we get a palindrome (63955936).

The spelling of 13023905 in words is "thirteen million, twenty-three thousand, nine hundred five".