12312543 has 8 divisors (see below), whose sum is σ = 16766208. Its totient is φ = 8033624.

The previous prime is 12312511. The next prime is 12312557. The reversal of 12312543 is 34521321.

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

It is a cyclic number.

It is not a de Polignac number, because 12312543 - 2⁵ = 12312511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312043) 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, 43521 + ... + 43802.

It is an arithmetic number, because the mean of its divisors is an integer number (2095776).

Almost surely, 2^12312543 is an apocalyptic number.

12312543 is a deficient number, since it is larger than the sum of its proper divisors (4453665).

12312543 is an equidigital number, since it uses as much as digits as its factorization.

12312543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87373.

The product of its digits is 720, while the sum is 21.

The square root of 12312543 is about 3508.9233391455. The cubic root of 12312543 is about 230.9134624598.

Adding to 12312543 its reverse (34521321), we get a palindrome (46833864).

The spelling of 12312543 in words is "twelve million, three hundred twelve thousand, five hundred forty-three".