2440312431 has 4 divisors (see below), whose sum is σ = 3253749912. Its totient is φ = 1626874952.

The previous prime is 2440312423. The next prime is 2440312439. The reversal of 2440312431 is 1342130442.

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

It is an interprime number because it is at equal distance from previous prime (2440312423) and next prime (2440312439).

It is a cyclic number.

It is not a de Polignac number, because 2440312431 - 2³ = 2440312423 is a prime.

It is a super-2 number, since 2×2440312431² = 11910249521786259522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440312439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406718736 + ... + 406718741.

It is an arithmetic number, because the mean of its divisors is an integer number (813437478).

Almost surely, 2^2440312431 is an apocalyptic number.

2440312431 is a deficient number, since it is larger than the sum of its proper divisors (813437481).

2440312431 is an equidigital number, since it uses as much as digits as its factorization.

2440312431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813437480.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2440312431 is about 49399.5185300424. The cubic root of 2440312431 is about 1346.3205579742.

Adding to 2440312431 its reverse (1342130442), we get a palindrome (3782442873).

The spelling of 2440312431 in words is "two billion, four hundred forty million, three hundred twelve thousand, four hundred thirty-one".