2313440 has 48 divisors (see below), whose sum is σ = 5760720. Its totient is φ = 875520.

The previous prime is 2313439. The next prime is 2313461. The reversal of 2313440 is 443132.

It is a Cunningham number, because it is equal to 39⁴-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2660 + ... + 3420.

It is an arithmetic number, because the mean of its divisors is an integer number (120015).

2^2313440 is an apocalyptic number.

2313440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2313440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2880360).

2313440 is an abundant number, since it is smaller than the sum of its proper divisors (3447280).

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

2313440 is a wasteful number, since it uses less digits than its factorization.

2313440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2313440 is about 1520.9996712689. Note that the first 3 decimals coincide. The cubic root of 2313440 is about 132.2572272212.

Adding to 2313440 its reverse (443132), we get a palindrome (2756572).

The spelling of 2313440 in words is "two million, three hundred thirteen thousand, four hundred forty".