12511963 has 4 divisors (see below), whose sum is σ = 12943440. Its totient is φ = 12080488.

The previous prime is 12511951. The next prime is 12511969. The reversal of 12511963 is 36911521.

12511963 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12511963 - 2¹⁷ = 12380891 is a prime.

It is a super-2 number, since 2×12511963² = 313098436226738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12511969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215695 + ... + 215752.

It is an arithmetic number, because the mean of its divisors is an integer number (3235860).

Almost surely, 2^12511963 is an apocalyptic number.

12511963 is a deficient number, since it is larger than the sum of its proper divisors (431477).

12511963 is an equidigital number, since it uses as much as digits as its factorization.

12511963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431476.

The product of its digits is 1620, while the sum is 28.

The square root of 12511963 is about 3537.2253250253. The cubic root of 12511963 is about 232.1534545109.

The spelling of 12511963 in words is "twelve million, five hundred eleven thousand, nine hundred sixty-three".