1030320257 has 2 divisors, whose sum is σ = 1030320258. Its totient is φ = 1030320256.

The previous prime is 1030320253. The next prime is 1030320281. The reversal of 1030320257 is 7520230301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 883813441 + 146506816 = 29729^2 + 12104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030320257 - 2² = 1030320253 is a prime.

It is not a weakly prime, because it can be changed into another prime (1030320253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515160128 + 515160129.

It is an arithmetic number, because the mean of its divisors is an integer number (515160129).

Almost surely, 2^1030320257 is an apocalyptic number.

It is an amenable number.

1030320257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030320257 is an equidigital number, since it uses as much as digits as its factorization.

1030320257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 1030320257 is about 32098.6021035185. The cubic root of 1030320257 is about 1010.0062924811.

Adding to 1030320257 its reverse (7520230301), we get a palindrome (8550550558).

The spelling of 1030320257 in words is "one billion, thirty million, three hundred twenty thousand, two hundred fifty-seven".