13112405 has 8 divisors (see below), whose sum is σ = 15795000. Its totient is φ = 10449856.

The previous prime is 13112383. The next prime is 13112417. The reversal of 13112405 is 50421131.

It can be written as a sum of positive squares in 4 ways, for example, as 253009 + 12859396 = 503^2 + 3586^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13112405 is a prime.

It is a congruent 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, 3530 + ... + 6219.

It is an arithmetic number, because the mean of its divisors is an integer number (1974375).

Almost surely, 2^13112405 is an apocalyptic number.

It is an amenable number.

13112405 is a deficient number, since it is larger than the sum of its proper divisors (2682595).

13112405 is an equidigital number, since it uses as much as digits as its factorization.

13112405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10023.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 13112405 is about 3621.1054941827. The cubic root of 13112405 is about 235.8092217175.

Adding to 13112405 its reverse (50421131), we get a palindrome (63533536).

The spelling of 13112405 in words is "thirteen million, one hundred twelve thousand, four hundred five".