281970097 has 2 divisors, whose sum is σ = 281970098. Its totient is φ = 281970096.

The previous prime is 281970077. The next prime is 281970107. The reversal of 281970097 is 790079182.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259983376 + 21986721 = 16124^2 + 4689^2 .

It is a cyclic number.

It is not a de Polignac number, because 281970097 - 2²³ = 273581489 is a prime.

It is not a weakly prime, because it can be changed into another prime (281970037) 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, 140985048 + 140985049.

It is an arithmetic number, because the mean of its divisors is an integer number (140985049).

Almost surely, 2^281970097 is an apocalyptic number.

It is an amenable number.

281970097 is a deficient number, since it is larger than the sum of its proper divisors (1).

281970097 is an equidigital number, since it uses as much as digits as its factorization.

281970097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 281970097 is about 16791.9652512742. The cubic root of 281970097 is about 655.7440388294.

The spelling of 281970097 in words is "two hundred eighty-one million, nine hundred seventy thousand, ninety-seven".