10303421257 has 2 divisors, whose sum is σ = 10303421258. Its totient is φ = 10303421256.

The previous prime is 10303421201. The next prime is 10303421279. The reversal of 10303421257 is 75212430301.

10303421257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10302453001 + 968256 = 101501^2 + 984^2 .

It is a cyclic number.

It is not a de Polignac number, because 10303421257 - 2¹⁹ = 10302896969 is a prime.

It is not a weakly prime, because it can be changed into another prime (10303421057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5151710628 + 5151710629.

It is an arithmetic number, because the mean of its divisors is an integer number (5151710629).

Almost surely, 2^10303421257 is an apocalyptic number.

It is an amenable number.

10303421257 is a deficient number, since it is larger than the sum of its proper divisors (1).

10303421257 is an equidigital number, since it uses as much as digits as its factorization.

10303421257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 10303421257 its reverse (75212430301), we get a palindrome (85515851558).

The spelling of 10303421257 in words is "ten billion, three hundred three million, four hundred twenty-one thousand, two hundred fifty-seven".