280797113 has 4 divisors (see below), whose sum is σ = 280933620. Its totient is φ = 280660608.

The previous prime is 280797089. The next prime is 280797137. The reversal of 280797113 is 311797082.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (280797089) and next prime (280797137).

It can be written as a sum of positive squares in 2 ways, for example, as 247527289 + 33269824 = 15733^2 + 5768^2 .

It is a cyclic number.

It is not a de Polignac number, because 280797113 - 2¹² = 280793017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (280797173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65120 + ... + 69297.

It is an arithmetic number, because the mean of its divisors is an integer number (70233405).

Almost surely, 2^280797113 is an apocalyptic number.

It is an amenable number.

280797113 is a deficient number, since it is larger than the sum of its proper divisors (136507).

280797113 is a wasteful number, since it uses less digits than its factorization.

280797113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136506.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 280797113 is about 16757.0019096496. The cubic root of 280797113 is about 654.8334856329.

The spelling of 280797113 in words is "two hundred eighty million, seven hundred ninety-seven thousand, one hundred thirteen".