12603971 has 4 divisors (see below), whose sum is σ = 12648792. Its totient is φ = 12559152.

The previous prime is 12603967. The next prime is 12604001. The reversal of 12603971 is 17930621.

12603971 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 12603971 - 2² = 12603967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12603901) 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, 21986 + ... + 22551.

It is an arithmetic number, because the mean of its divisors is an integer number (3162198).

Almost surely, 2^12603971 is an apocalyptic number.

12603971 is a deficient number, since it is larger than the sum of its proper divisors (44821).

12603971 is an equidigital number, since it uses as much as digits as its factorization.

12603971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44820.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 12603971 is about 3550.2071770532. The cubic root of 12603971 is about 232.7211200405.

The spelling of 12603971 in words is "twelve million, six hundred three thousand, nine hundred seventy-one".