12312641 has 8 divisors (see below), whose sum is σ = 14222304. Its totient is φ = 10534720.

The previous prime is 12312631. The next prime is 12312647. The reversal of 12312641 is 14621321.

12312641 = 399² + 400² + ... + 464².

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 12312641 - 2¹⁰ = 12311617 is a prime.

It is a super-2 number, since 2×12312641² = 303202256789762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12312647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32735 + ... + 33108.

It is an arithmetic number, because the mean of its divisors is an integer number (1777788).

Almost surely, 2^12312641 is an apocalyptic number.

12312641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12312641 is a deficient number, since it is larger than the sum of its proper divisors (1909663).

12312641 is a wasteful number, since it uses less digits than its factorization.

12312641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65871.

The product of its digits is 288, while the sum is 20.

The square root of 12312641 is about 3508.9373035151. The cubic root of 12312641 is about 230.9140750995.

Adding to 12312641 its reverse (14621321), we get a palindrome (26933962).

The spelling of 12312641 in words is "twelve million, three hundred twelve thousand, six hundred forty-one".