2431106021 has 2 divisors, whose sum is σ = 2431106022. Its totient is φ = 2431106020.

The previous prime is 2431106011. The next prime is 2431106023. The reversal of 2431106021 is 1206011342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2333373025 + 97732996 = 48305^2 + 9886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2431106021 is a prime.

Together with 2431106023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2431105984 and 2431106002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2431106023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215553010 + 1215553011.

It is an arithmetic number, because the mean of its divisors is an integer number (1215553011).

Almost surely, 2^2431106021 is an apocalyptic number.

It is an amenable number.

2431106021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2431106021 is an equidigital number, since it uses as much as digits as its factorization.

2431106021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2431106021 is about 49306.2472816579. The cubic root of 2431106021 is about 1344.6253653646.

Adding to 2431106021 its reverse (1206011342), we get a palindrome (3637117363).

The spelling of 2431106021 in words is "two billion, four hundred thirty-one million, one hundred six thousand, twenty-one".