280275323 has 4 divisors (see below), whose sum is σ = 280412088. Its totient is φ = 280138560.

The previous prime is 280275319. The next prime is 280275361. The reversal of 280275323 is 323572082.

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

It is a cyclic number.

It is not a de Polignac number, because 280275323 - 2² = 280275319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 280275323.

It is not an unprimeable number, because it can be changed into a prime (280275383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65261 + ... + 69422.

It is an arithmetic number, because the mean of its divisors is an integer number (70103022).

Almost surely, 2^280275323 is an apocalyptic number.

280275323 is a deficient number, since it is larger than the sum of its proper divisors (136765).

280275323 is a wasteful number, since it uses less digits than its factorization.

280275323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136764.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 280275323 is about 16741.4253574778. The cubic root of 280275323 is about 654.4276203152.

It can be divided in two parts, 2802 and 75323, that added together give a 7-th power (78125 = 5⁷).

The spelling of 280275323 in words is "two hundred eighty million, two hundred seventy-five thousand, three hundred twenty-three".