2331423440 has 40 divisors (see below), whose sum is σ = 5427751560. Its totient is φ = 931332096.

The previous prime is 2331423439. The next prime is 2331423461. The reversal of 2331423440 is 443241332.

2331423440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14348944 + 2317074496 = 3788^2 + 48136^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 42572 + ... + 80468.

It is an arithmetic number, because the mean of its divisors is an integer number (135693789).

Almost surely, 2^2331423440 is an apocalyptic number.

2331423440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2331423440 is an abundant number, since it is smaller than the sum of its proper divisors (3096328120).

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

2331423440 is a wasteful number, since it uses less digits than its factorization.

2331423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38679 (or 38673 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 2331423440 is about 48284.8158327232. The cubic root of 2331423440 is about 1325.9904193340.

Adding to 2331423440 its reverse (443241332), we get a palindrome (2774664772).

The spelling of 2331423440 in words is "two billion, three hundred thirty-one million, four hundred twenty-three thousand, four hundred forty".