2440021231 has 8 divisors (see below), whose sum is σ = 2458168928. Its totient is φ = 2421900000.

The previous prime is 2440021229. The next prime is 2440021247. The reversal of 2440021231 is 1321200442.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2440021231 - 2¹ = 2440021229 is a prime.

It is a super-2 number, since 2×2440021231² = 11907407215461510722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2440021199 and 2440021208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440021201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202681 + ... + 214381.

It is an arithmetic number, because the mean of its divisors is an integer number (307271116).

Almost surely, 2^2440021231 is an apocalyptic number.

2440021231 is a deficient number, since it is larger than the sum of its proper divisors (18147697).

2440021231 is a wasteful number, since it uses less digits than its factorization.

2440021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13233.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2440021231 is about 49396.5710449622. The cubic root of 2440021231 is about 1346.2670041565.

Adding to 2440021231 its reverse (1321200442), we get a palindrome (3761221673).

The spelling of 2440021231 in words is "two billion, four hundred forty million, twenty-one thousand, two hundred thirty-one".