2331344440 has 32 divisors (see below), whose sum is σ = 5251988160. Its totient is φ = 931388800.

The previous prime is 2331344401. The next prime is 2331344447. The reversal of 2331344440 is 444431332.

It is a junction number, because it is equal to n+sod(n) for n = 2331344399 and 2331344408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331344447) 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, 2656 + ... + 68335.

It is an arithmetic number, because the mean of its divisors is an integer number (164124630).

Almost surely, 2^2331344440 is an apocalyptic number.

2331344440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2331344440 is an abundant number, since it is smaller than the sum of its proper divisors (2920643720).

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

2331344440 is a wasteful number, since it uses less digits than its factorization.

2331344440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71823 (or 71819 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 2331344440 is about 48283.9977632341. The cubic root of 2331344440 is about 1325.9754421568.

Adding to 2331344440 its reverse (444431332), we get a palindrome (2775775772).

The spelling of 2331344440 in words is "two billion, three hundred thirty-one million, three hundred forty-four thousand, four hundred forty".