2020303081 has 2 divisors, whose sum is σ = 2020303082. Its totient is φ = 2020303080.

The previous prime is 2020303063. The next prime is 2020303121. The reversal of 2020303081 is 1803030202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1930811481 + 89491600 = 43941^2 + 9460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020303081 is a prime.

It is a super-2 number, since 2×2020303081² = 8163249078196185122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2020303781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010151540 + 1010151541.

It is an arithmetic number, because the mean of its divisors is an integer number (1010151541).

Almost surely, 2^2020303081 is an apocalyptic number.

It is an amenable number.

2020303081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020303081 is an equidigital number, since it uses as much as digits as its factorization.

2020303081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2020303081 is about 44947.7817138955. The cubic root of 2020303081 is about 1264.1700839413.

Adding to 2020303081 its reverse (1803030202), we get a palindrome (3823333283).

The spelling of 2020303081 in words is "two billion, twenty million, three hundred three thousand, eighty-one".