12287951 has 4 divisors (see below), whose sum is σ = 13233192. Its totient is φ = 11342712.

The previous prime is 12287939. The next prime is 12287983. The reversal of 12287951 is 15978221.

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 12287951 - 2⁶ = 12287887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12280951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472601 + ... + 472626.

It is an arithmetic number, because the mean of its divisors is an integer number (3308298).

Almost surely, 2^12287951 is an apocalyptic number.

12287951 is a deficient number, since it is larger than the sum of its proper divisors (945241).

12287951 is an equidigital number, since it uses as much as digits as its factorization.

12287951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945240.

The product of its digits is 10080, while the sum is 35.

The square root of 12287951 is about 3505.4173788580. The cubic root of 12287951 is about 230.7596245204.

The spelling of 12287951 in words is "twelve million, two hundred eighty-seven thousand, nine hundred fifty-one".