280305041 has 2 divisors, whose sum is σ = 280305042. Its totient is φ = 280305040.

The previous prime is 280305001. The next prime is 280305049. The reversal of 280305041 is 140503082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216943441 + 63361600 = 14729^2 + 7960^2 .

It is a cyclic number.

It is not a de Polignac number, because 280305041 - 2⁶ = 280304977 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 280304998 and 280305016.

It is not a weakly prime, because it can be changed into another prime (280305049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140152520 + 140152521.

It is an arithmetic number, because the mean of its divisors is an integer number (140152521).

Almost surely, 2^280305041 is an apocalyptic number.

It is an amenable number.

280305041 is a deficient number, since it is larger than the sum of its proper divisors (1).

280305041 is an equidigital number, since it uses as much as digits as its factorization.

280305041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 280305041 is about 16742.3128927875. The cubic root of 280305041 is about 654.4507494684.

The spelling of 280305041 in words is "two hundred eighty million, three hundred five thousand, forty-one".