1020310302257 has 2 divisors, whose sum is σ = 1020310302258. Its totient is φ = 1020310302256.

The previous prime is 1020310302239. The next prime is 1020310302299. The reversal of 1020310302257 is 7522030130201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1001758772641 + 18551529616 = 1000879^2 + 136204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020310302257 - 2¹⁴ = 1020310285873 is a prime.

It is a super-2 number, since 2×1020310302257² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1020310382257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510155151128 + 510155151129.

It is an arithmetic number, because the mean of its divisors is an integer number (510155151129).

Almost surely, 2^{1020310302257} is an apocalyptic number.

It is an amenable number.

1020310302257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020310302257 is an equidigital number, since it uses as much as digits as its factorization.

1020310302257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

Adding to 1020310302257 its reverse (7522030130201), we get a palindrome (8542340432458).

The spelling of 1020310302257 in words is "one trillion, twenty billion, three hundred ten million, three hundred two thousand, two hundred fifty-seven".