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2021313061 is a prime number
BaseRepresentation
bin111100001111010…
…1100101000100101
312012212110100020201
41320132230220211
513114424004221
6532323430501
7101042606665
oct17036545045
95185410221
102021313061
11947a84469
12484b25431
132629ca341
141526461a5
15bc6c2891
hex787aca25

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, 22021313061 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".