12313240 has 16 divisors (see below), whose sum is σ = 27704880. Its totient is φ = 4925280.

The previous prime is 12313237. The next prime is 12313261. The reversal of 12313240 is 4231321.

It is a happy number.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153876 + ... + 153955.

It is an arithmetic number, because the mean of its divisors is an integer number (1731555).

Almost surely, 2^12313240 is an apocalyptic number.

12313240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12313240 is an abundant number, since it is smaller than the sum of its proper divisors (15391640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12313240 is a wasteful number, since it uses less digits than its factorization.

12313240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307842 (or 307838 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12313240 is about 3509.0226559542. The cubic root of 12313240 is about 230.9178196329.

Adding to 12313240 its reverse (4231321), we get a palindrome (16544561).

The spelling of 12313240 in words is "twelve million, three hundred thirteen thousand, two hundred forty".