2440120231 has 4 divisors (see below), whose sum is σ = 2480122264. Its totient is φ = 2400118200.

The previous prime is 2440120223. The next prime is 2440120283. The reversal of 2440120231 is 1320210442.

2440120231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2440120231 - 2³ = 2440120223 is a prime.

It is a super-2 number, since 2×2440120231² = 11908373483470986722, 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 = 2440120199 and 2440120208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440120831) 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, 20000925 + ... + 20001046.

It is an arithmetic number, because the mean of its divisors is an integer number (620030566).

Almost surely, 2^2440120231 is an apocalyptic number.

2440120231 is a deficient number, since it is larger than the sum of its proper divisors (40002033).

2440120231 is an equidigital number, since it uses as much as digits as its factorization.

2440120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40002032.

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

The square root of 2440120231 is about 49397.5731286467. The cubic root of 2440120231 is about 1346.2852114613.

Adding to 2440120231 its reverse (1320210442), we get a palindrome (3760330673).

The spelling of 2440120231 in words is "two billion, four hundred forty million, one hundred twenty thousand, two hundred thirty-one".