12320287 has 8 divisors (see below), whose sum is σ = 14259200. Its totient is φ = 10426104.

The previous prime is 12320267. The next prime is 12320309. The reversal of 12320287 is 78202321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12320287 - 2⁷ = 12320159 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 (12320207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10587 + ... + 11692.

It is an arithmetic number, because the mean of its divisors is an integer number (1782400).

Almost surely, 2^12320287 is an apocalyptic number.

12320287 is a deficient number, since it is larger than the sum of its proper divisors (1938913).

12320287 is an equidigital number, since it uses as much as digits as its factorization.

12320287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22365.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 12320287 is about 3510.0266380756. The cubic root of 12320287 is about 230.9618634843.

The spelling of 12320287 in words is "twelve million, three hundred twenty thousand, two hundred eighty-seven".