2531344121 has 2 divisors, whose sum is σ = 2531344122. Its totient is φ = 2531344120.

The previous prime is 2531344111. The next prime is 2531344177. The reversal of 2531344121 is 1214431352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2519538025 + 11806096 = 50195^2 + 3436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2531344121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2531344111) 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, 1265672060 + 1265672061.

It is an arithmetic number, because the mean of its divisors is an integer number (1265672061).

Almost surely, 2^2531344121 is an apocalyptic number.

It is an amenable number.

2531344121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531344121 is an equidigital number, since it uses as much as digits as its factorization.

2531344121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 2531344121 is about 50312.4648670685. The cubic root of 2531344121 is about 1362.8573361883.

Adding to 2531344121 its reverse (1214431352), we get a palindrome (3745775473).

The spelling of 2531344121 in words is "two billion, five hundred thirty-one million, three hundred forty-four thousand, one hundred twenty-one".