2340442312431 has 4 divisors (see below), whose sum is σ = 3120589749912. Its totient is φ = 1560294874952.

The previous prime is 2340442312409. The next prime is 2340442312433. The reversal of 2340442312431 is 1342132440432.

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

It is a cyclic number.

It is not a de Polignac number, because 2340442312431 - 2¹⁵ = 2340442279663 is a prime.

It is a super-2 number, since 2×2340442312431² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2340442312392 and 2340442312401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2340442312433) 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, 390073718736 + ... + 390073718741.

It is an arithmetic number, because the mean of its divisors is an integer number (780147437478).

Almost surely, 2^{2340442312431} is an apocalyptic number.

2340442312431 is a deficient number, since it is larger than the sum of its proper divisors (780147437481).

2340442312431 is an equidigital number, since it uses as much as digits as its factorization.

2340442312431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780147437480.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 2340442312431 its reverse (1342132440432), we get a palindrome (3682574752863).

The spelling of 2340442312431 in words is "two trillion, three hundred forty billion, four hundred forty-two million, three hundred twelve thousand, four hundred thirty-one".