281304061 has 2 divisors, whose sum is σ = 281304062. Its totient is φ = 281304060.

The previous prime is 281304043. The next prime is 281304073. The reversal of 281304061 is 160403182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142205625 + 139098436 = 11925^2 + 11794^2 .

It is a cyclic number.

It is not a de Polignac number, because 281304061 - 2¹³ = 281295869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281304041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140652030 + 140652031.

It is an arithmetic number, because the mean of its divisors is an integer number (140652031).

Almost surely, 2^281304061 is an apocalyptic number.

It is an amenable number.

281304061 is a deficient number, since it is larger than the sum of its proper divisors (1).

281304061 is an equidigital number, since it uses as much as digits as its factorization.

281304061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 281304061 is about 16772.1215414151. The cubic root of 281304061 is about 655.2273250926.

The spelling of 281304061 in words is "two hundred eighty-one million, three hundred four thousand, sixty-one".