2981311061 has 2 divisors, whose sum is σ = 2981311062. Its totient is φ = 2981311060.

The previous prime is 2981311049. The next prime is 2981311093. The reversal of 2981311061 is 1601131892.

2981311061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (2981311093) can be obtained adding 2981311061 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2960012836 + 21298225 = 54406^2 + 4615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2981311061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2981311961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1490655530 + 1490655531.

It is an arithmetic number, because the mean of its divisors is an integer number (1490655531).

Almost surely, 2^2981311061 is an apocalyptic number.

It is an amenable number.

2981311061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2981311061 is an equidigital number, since it uses as much as digits as its factorization.

2981311061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 2981311061 is about 54601.3833249671. The cubic root of 2981311061 is about 1439.2484280523.

The spelling of 2981311061 in words is "two billion, nine hundred eighty-one million, three hundred eleven thousand, sixty-one".