280231079 has 2 divisors, whose sum is σ = 280231080. Its totient is φ = 280231078.

The previous prime is 280231069. The next prime is 280231097. The reversal of 280231079 is 970132082.

Together with next prime (280231097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280231079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280231069) 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 as a sum of consecutive naturals, namely, 140115539 + 140115540.

It is an arithmetic number, because the mean of its divisors is an integer number (140115540).

Almost surely, 2^280231079 is an apocalyptic number.

280231079 is a deficient number, since it is larger than the sum of its proper divisors (1).

280231079 is an equidigital number, since it uses as much as digits as its factorization.

280231079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 280231079 is about 16740.1039124612. The cubic root of 280231079 is about 654.3931827259.

The spelling of 280231079 in words is "two hundred eighty million, two hundred thirty-one thousand, seventy-nine".