2061047281 has 2 divisors, whose sum is σ = 2061047282. Its totient is φ = 2061047280.

The previous prime is 2061047279. The next prime is 2061047323. The reversal of 2061047281 is 1827401602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1824656656 + 236390625 = 42716^2 + 15375^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061047281 - 2¹ = 2061047279 is a prime.

It is a super-2 number, since 2×2061047281² = 8495831789034985922, which contains 22 as substring.

Together with 2061047279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2061047221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030523640 + 1030523641.

It is an arithmetic number, because the mean of its divisors is an integer number (1030523641).

Almost surely, 2^2061047281 is an apocalyptic number.

It is an amenable number.

2061047281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061047281 is an equidigital number, since it uses as much as digits as its factorization.

2061047281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 2061047281 is about 45398.7585843490. The cubic root of 2061047281 is about 1272.6119145616.

Adding to 2061047281 its reverse (1827401602), we get a palindrome (3888448883).

The spelling of 2061047281 in words is "two billion, sixty-one million, forty-seven thousand, two hundred eighty-one".