280423316 has 12 divisors (see below), whose sum is σ = 494487840. Its totient is φ = 139141080.

The previous prime is 280423309. The next prime is 280423331. The reversal of 280423316 is 613324082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267056 + ... + 268103.

It is an arithmetic number, because the mean of its divisors is an integer number (41207320).

Almost surely, 2^280423316 is an apocalyptic number.

It is an amenable number.

280423316 is a deficient number, since it is larger than the sum of its proper divisors (214064524).

280423316 is a wasteful number, since it uses less digits than its factorization.

280423316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535294 (or 535292 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 280423316 is about 16745.8447383224. The cubic root of 280423316 is about 654.5427852468.

Adding to 280423316 its reverse (613324082), we get a palindrome (893747398).

The spelling of 280423316 in words is "two hundred eighty million, four hundred twenty-three thousand, three hundred sixteen".