2331220240 has 20 divisors (see below), whose sum is σ = 5420087244. Its totient is φ = 932488064.

The previous prime is 2331220201. The next prime is 2331220249. The reversal of 2331220240 is 420221332.

It can be written as a sum of positive squares in 2 ways, for example, as 1850032144 + 481188096 = 43012^2 + 21936^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (2331220249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14570047 + ... + 14570206.

Almost surely, 2^2331220240 is an apocalyptic number.

2331220240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2331220240 is an abundant number, since it is smaller than the sum of its proper divisors (3088867004).

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

2331220240 is a wasteful number, since it uses less digits than its factorization.

2331220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29140266 (or 29140260 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2331220240 is about 48282.7116057083. The cubic root of 2331220240 is about 1325.9518950750.

Adding to 2331220240 its reverse (420221332), we get a palindrome (2751441572).

The spelling of 2331220240 in words is "two billion, three hundred thirty-one million, two hundred twenty thousand, two hundred forty".