13023505 has 16 divisors (see below), whose sum is σ = 17216064. Its totient is φ = 9378880.

The previous prime is 13023499. The next prime is 13023509. The reversal of 13023505 is 50532031.

It is not a de Polignac number, because 13023505 - 2¹⁹ = 12499217 is a prime.

It is a super-2 number, since 2×13023505² = 339223364970050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13023509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4779 + ... + 6991.

It is an arithmetic number, because the mean of its divisors is an integer number (1076004).

Almost surely, 2^13023505 is an apocalyptic number.

It is an amenable number.

13023505 is a deficient number, since it is larger than the sum of its proper divisors (4192559).

13023505 is a wasteful number, since it uses less digits than its factorization.

13023505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 13023505 is about 3608.8093604401. The cubic root of 13023505 is about 235.2750965813.

Adding to 13023505 its reverse (50532031), we get a palindrome (63555536).

The spelling of 13023505 in words is "thirteen million, twenty-three thousand, five hundred five".