280340327 has 2 divisors, whose sum is σ = 280340328. Its totient is φ = 280340326.

The previous prime is 280340311. The next prime is 280340339. The reversal of 280340327 is 723043082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280340327 - 2⁴ = 280340311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 280340327.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280340377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140170163 + 140170164.

It is an arithmetic number, because the mean of its divisors is an integer number (140170164).

Almost surely, 2^280340327 is an apocalyptic number.

280340327 is a deficient number, since it is larger than the sum of its proper divisors (1).

280340327 is an equidigital number, since it uses as much as digits as its factorization.

280340327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 280340327 is about 16743.3666566793. The cubic root of 280340327 is about 654.4782100046.

The spelling of 280340327 in words is "two hundred eighty million, three hundred forty thousand, three hundred twenty-seven".