2312440 has 32 divisors (see below), whose sum is σ = 5604480. Its totient is φ = 853632.

The previous prime is 2312419. The next prime is 2312477. The reversal of 2312440 is 442132.

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, 1704 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (175140).

2^2312440 is an apocalyptic number.

2312440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2312440 is an abundant number, since it is smaller than the sum of its proper divisors (3292040).

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

2312440 is a wasteful number, since it uses less digits than its factorization.

2312440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471 (or 4467 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2312440 is about 1520.6709045681. The cubic root of 2312440 is about 132.2381681161.

Adding to 2312440 its reverse (442132), we get a palindrome (2754572).

The spelling of 2312440 in words is "two million, three hundred twelve thousand, four hundred forty".