2431312123 has 2 divisors, whose sum is σ = 2431312124. Its totient is φ = 2431312122.

The previous prime is 2431312109. The next prime is 2431312127. The reversal of 2431312123 is 3212131342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2431312123 is a prime.

It is a super-2 number, since 2×2431312123² = 11822557278893534258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2431312094 and 2431312103.

It is not a weakly prime, because it can be changed into another prime (2431312127) 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 as a sum of consecutive naturals, namely, 1215656061 + 1215656062.

It is an arithmetic number, because the mean of its divisors is an integer number (1215656062).

Almost surely, 2^2431312123 is an apocalyptic number.

2431312123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2431312123 is an equidigital number, since it uses as much as digits as its factorization.

2431312123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

The square root of 2431312123 is about 49308.3372564924. The cubic root of 2431312123 is about 1344.6633620820.

Adding to 2431312123 its reverse (3212131342), we get a palindrome (5643443465).

The spelling of 2431312123 in words is "two billion, four hundred thirty-one million, three hundred twelve thousand, one hundred twenty-three".