281161297 has 8 divisors (see below), whose sum is σ = 296537760. Its totient is φ = 265842720.

The previous prime is 281161271. The next prime is 281161319. The reversal of 281161297 is 792161182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 281161297 - 2⁷ = 281161169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281161217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4303 + ... + 24100.

It is an arithmetic number, because the mean of its divisors is an integer number (37067220).

Almost surely, 2^281161297 is an apocalyptic number.

It is an amenable number.

281161297 is a deficient number, since it is larger than the sum of its proper divisors (15376463).

281161297 is a wasteful number, since it uses less digits than its factorization.

281161297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28943.

The product of its digits is 12096, while the sum is 37.

The square root of 281161297 is about 16767.8650101914. The cubic root of 281161297 is about 655.1164620137.

The spelling of 281161297 in words is "two hundred eighty-one million, one hundred sixty-one thousand, two hundred ninety-seven".