2021313061 has 2 divisors, whose sum is σ = 2021313062. Its totient is φ = 2021313060.

The previous prime is 2021313013. The next prime is 2021313121. The reversal of 2021313061 is 1603131202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2012868225 + 8444836 = 44865^2 + 2906^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021313061 - 2¹¹ = 2021311013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021313001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010656530 + 1010656531.

It is an arithmetic number, because the mean of its divisors is an integer number (1010656531).

Almost surely, 2^2021313061 is an apocalyptic number.

It is an amenable number.

2021313061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021313061 is an equidigital number, since it uses as much as digits as its factorization.

2021313061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2021313061 is about 44959.0153473138. The cubic root of 2021313061 is about 1264.3807080816.

Adding to 2021313061 its reverse (1603131202), we get a palindrome (3624444263).

The spelling of 2021313061 in words is "two billion, twenty-one million, three hundred thirteen thousand, sixty-one".