12315869 has 4 divisors (see below), whose sum is σ = 12334140. Its totient is φ = 12297600.

The previous prime is 12315851. The next prime is 12315881. The reversal of 12315869 is 96851321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4687225 + 7628644 = 2165^2 + 2762^2 .

It is a cyclic number.

It is not a de Polignac number, because 12315869 - 2⁸ = 12315613 is a prime.

It is a super-2 number, since 2×12315869² = 303361258450322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8084 + ... + 9485.

It is an arithmetic number, because the mean of its divisors is an integer number (3083535).

Almost surely, 2^12315869 is an apocalyptic number.

It is an amenable number.

12315869 is a deficient number, since it is larger than the sum of its proper divisors (18271).

12315869 is an equidigital number, since it uses as much as digits as its factorization.

12315869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18270.

The product of its digits is 12960, while the sum is 35.

The square root of 12315869 is about 3509.3972416927. The cubic root of 12315869 is about 230.9342528855.

The spelling of 12315869 in words is "twelve million, three hundred fifteen thousand, eight hundred sixty-nine".