1024320251 has 2 divisors, whose sum is σ = 1024320252. Its totient is φ = 1024320250.

The previous prime is 1024320217. The next prime is 1024320277. The reversal of 1024320251 is 1520234201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1024320251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1024322251) 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, 512160125 + 512160126.

It is an arithmetic number, because the mean of its divisors is an integer number (512160126).

Almost surely, 2^1024320251 is an apocalyptic number.

1024320251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024320251 is an equidigital number, since it uses as much as digits as its factorization.

1024320251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1024320251 is about 32005.0035306981. The cubic root of 1024320251 is about 1008.0419047389.

Adding to 1024320251 its reverse (1520234201), we get a palindrome (2544554452).

The spelling of 1024320251 in words is "one billion, twenty-four million, three hundred twenty thousand, two hundred fifty-one".