12310840 has 32 divisors (see below), whose sum is σ = 28226880. Its totient is φ = 4830592.

The previous prime is 12310817. The next prime is 12310847. The reversal of 12310840 is 4801321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310847) 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, 784 + ... + 5023.

It is an arithmetic number, because the mean of its divisors is an integer number (882090).

Almost surely, 2^12310840 is an apocalyptic number.

12310840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12310840 is an abundant number, since it is smaller than the sum of its proper divisors (15916040).

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

12310840 is a wasteful number, since it uses less digits than its factorization.

12310840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5871 (or 5867 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12310840 is about 3508.6806637253. The cubic root of 12310840 is about 230.9028157624.

The spelling of 12310840 in words is "twelve million, three hundred ten thousand, eight hundred forty".