281402197 has 2 divisors, whose sum is σ = 281402198. Its totient is φ = 281402196.

The previous prime is 281402161. The next prime is 281402201. The reversal of 281402197 is 791204182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197514916 + 83887281 = 14054^2 + 9159^2 .

It is a cyclic number.

It is not a de Polignac number, because 281402197 - 2¹¹ = 281400149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281402117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140701098 + 140701099.

It is an arithmetic number, because the mean of its divisors is an integer number (140701099).

Almost surely, 2^281402197 is an apocalyptic number.

It is an amenable number.

281402197 is a deficient number, since it is larger than the sum of its proper divisors (1).

281402197 is an equidigital number, since it uses as much as digits as its factorization.

281402197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 281402197 is about 16775.0468553742. The cubic root of 281402197 is about 655.3035106414.

The spelling of 281402197 in words is "two hundred eighty-one million, four hundred two thousand, one hundred ninety-seven".