12311243 has 8 divisors (see below), whose sum is σ = 14092512. Its totient is φ = 10535616.

The previous prime is 12311219. The next prime is 12311251. The reversal of 12311243 is 34211321.

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

It is not a de Polignac number, because 12311243 - 2¹⁰ = 12310219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12311443) 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, 5621 + ... + 7497.

It is an arithmetic number, because the mean of its divisors is an integer number (1761564).

Almost surely, 2^12311243 is an apocalyptic number.

12311243 is a deficient number, since it is larger than the sum of its proper divisors (1781269).

12311243 is an equidigital number, since it uses as much as digits as its factorization.

12311243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821.

The product of its digits is 144, while the sum is 17.

The square root of 12311243 is about 3508.7380922491. The cubic root of 12311243 is about 230.9053352985.

Adding to 12311243 its reverse (34211321), we get a palindrome (46522564).

The spelling of 12311243 in words is "twelve million, three hundred eleven thousand, two hundred forty-three".