12911043 has 4 divisors (see below), whose sum is σ = 17214728. Its totient is φ = 8607360.

The previous prime is 12911033. The next prime is 12911047. The reversal of 12911043 is 34011921.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12911043 - 2⁵ = 12911011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12911047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2151838 + ... + 2151843.

It is an arithmetic number, because the mean of its divisors is an integer number (4303682).

Almost surely, 2^12911043 is an apocalyptic number.

12911043 is a deficient number, since it is larger than the sum of its proper divisors (4303685).

12911043 is an equidigital number, since it uses as much as digits as its factorization.

12911043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4303684.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 12911043 is about 3593.1939830741. The cubic root of 12911043 is about 234.5959133807.

Adding to 12911043 its reverse (34011921), we get a palindrome (46922964).

The spelling of 12911043 in words is "twelve million, nine hundred eleven thousand, forty-three".