13030905 has 8 divisors (see below), whose sum is σ = 20849472. Its totient is φ = 6949808.

The previous prime is 13030877. The next prime is 13030921. The reversal of 13030905 is 50903031.

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 13030905 - 2¹⁰ = 13029881 is a prime.

It is a Curzon 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, 434349 + ... + 434378.

It is an arithmetic number, because the mean of its divisors is an integer number (2606184).

Almost surely, 2^13030905 is an apocalyptic number.

13030905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13030905 is a deficient number, since it is larger than the sum of its proper divisors (7818567).

13030905 is an equidigital number, since it uses as much as digits as its factorization.

13030905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868735.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 13030905 is about 3609.8344837402. The cubic root of 13030905 is about 235.3196495150.

Adding to 13030905 its reverse (50903031), we get a palindrome (63933936).

The spelling of 13030905 in words is "thirteen million, thirty thousand, nine hundred five".