2231420240 has 40 divisors (see below), whose sum is σ = 5929203840. Its totient is φ = 765058176.

The previous prime is 2231420231. The next prime is 2231420329. The reversal of 2231420240 is 420241322.

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

It is a super-3 number, since 3×2231420240³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 1991780 + ... + 1992899.

It is an arithmetic number, because the mean of its divisors is an integer number (148230096).

Almost surely, 2^2231420240 is an apocalyptic number.

2231420240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231420240 is an abundant number, since it is smaller than the sum of its proper divisors (3697783600).

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

2231420240 is a wasteful number, since it uses less digits than its factorization.

2231420240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984699 (or 3984693 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2231420240 is about 47237.9110461079. The cubic root of 2231420240 is about 1306.7538531069.

Adding to 2231420240 its reverse (420241322), we get a palindrome (2651661562).

The spelling of 2231420240 in words is "two billion, two hundred thirty-one million, four hundred twenty thousand, two hundred forty".