12657203 has 4 divisors (see below), whose sum is σ = 13630848. Its totient is φ = 11683560.

The previous prime is 12657191. The next prime is 12657209. The reversal of 12657203 is 30275621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30275621 = 449 ⋅67429.

It is a cyclic number.

It is not a de Polignac number, because 12657203 - 2⁴ = 12657187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12657209) 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, 486803 + ... + 486828.

It is an arithmetic number, because the mean of its divisors is an integer number (3407712).

Almost surely, 2^12657203 is an apocalyptic number.

12657203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12657203 is a deficient number, since it is larger than the sum of its proper divisors (973645).

12657203 is an equidigital number, since it uses as much as digits as its factorization.

12657203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973644.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 12657203 is about 3557.6963051953. The cubic root of 12657203 is about 233.0482870690.

The spelling of 12657203 in words is "twelve million, six hundred fifty-seven thousand, two hundred three".