1020311273 has 2 divisors, whose sum is σ = 1020311274. Its totient is φ = 1020311272.

The previous prime is 1020311261. The next prime is 1020311293. The reversal of 1020311273 is 3721130201.

It is an a-pointer prime, because the next prime (1020311293) can be obtained adding 1020311273 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 939545104 + 80766169 = 30652^2 + 8987^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020311273 - 2⁶ = 1020311209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020311293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510155636 + 510155637.

It is an arithmetic number, because the mean of its divisors is an integer number (510155637).

Almost surely, 2^1020311273 is an apocalyptic number.

It is an amenable number.

1020311273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020311273 is an equidigital number, since it uses as much as digits as its factorization.

1020311273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1020311273 is about 31942.3116414576. The cubic root of 1020311273 is about 1006.7250960316.

Adding to 1020311273 its reverse (3721130201), we get a palindrome (4741441474).

The spelling of 1020311273 in words is "one billion, twenty million, three hundred eleven thousand, two hundred seventy-three".