280385107 has 2 divisors, whose sum is σ = 280385108. Its totient is φ = 280385106.

The previous prime is 280385023. The next prime is 280385117. The reversal of 280385107 is 701583082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280385107 - 2²⁷ = 146167379 is a prime.

It is not a weakly prime, because it can be changed into another prime (280385117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140192553 + 140192554.

It is an arithmetic number, because the mean of its divisors is an integer number (140192554).

Almost surely, 2^280385107 is an apocalyptic number.

280385107 is a deficient number, since it is larger than the sum of its proper divisors (1).

280385107 is an equidigital number, since it uses as much as digits as its factorization.

280385107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 280385107 is about 16744.7038492772. The cubic root of 280385107 is about 654.5130557155.

The spelling of 280385107 in words is "two hundred eighty million, three hundred eighty-five thousand, one hundred seven".