280348319 has 2 divisors, whose sum is σ = 280348320. Its totient is φ = 280348318.

The previous prime is 280348273. The next prime is 280348337. The reversal of 280348319 is 913843082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280348319 - 2²⁰ = 279299743 is a prime.

It is a super-2 number, since 2×280348319² = 157190359932251522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280348339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140174159 + 140174160.

It is an arithmetic number, because the mean of its divisors is an integer number (140174160).

Almost surely, 2^280348319 is an apocalyptic number.

280348319 is a deficient number, since it is larger than the sum of its proper divisors (1).

280348319 is an equidigital number, since it uses as much as digits as its factorization.

280348319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 280348319 is about 16743.6053166575. The cubic root of 280348319 is about 654.4844292789.

The spelling of 280348319 in words is "two hundred eighty million, three hundred forty-eight thousand, three hundred nineteen".