2240420231 has 4 divisors (see below), whose sum is σ = 2560480272. Its totient is φ = 1920360192.

The previous prime is 2240420219. The next prime is 2240420233. The reversal of 2240420231 is 1320240422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2240420231 is a prime.

It is a super-2 number, since 2×2240420231² = 10038965622948186722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240420233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160030010 + ... + 160030023.

It is an arithmetic number, because the mean of its divisors is an integer number (640120068).

Almost surely, 2^2240420231 is an apocalyptic number.

2240420231 is a deficient number, since it is larger than the sum of its proper divisors (320060041).

2240420231 is an equidigital number, since it uses as much as digits as its factorization.

2240420231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320060040.

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

The square root of 2240420231 is about 47333.0775568207. The cubic root of 2240420231 is about 1308.5083405942.

Adding to 2240420231 its reverse (1320240422), we get a palindrome (3560660653).

The spelling of 2240420231 in words is "two billion, two hundred forty million, four hundred twenty thousand, two hundred thirty-one".