1280611327 has 2 divisors, whose sum is σ = 1280611328. Its totient is φ = 1280611326.

The previous prime is 1280611289. The next prime is 1280611331. The reversal of 1280611327 is 7231160821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1280611327 - 2²³ = 1272222719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1280611627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640305663 + 640305664.

It is an arithmetic number, because the mean of its divisors is an integer number (640305664).

Almost surely, 2^1280611327 is an apocalyptic number.

1280611327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280611327 is an equidigital number, since it uses as much as digits as its factorization.

1280611327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1280611327 is about 35785.6301746944. The cubic root of 1280611327 is about 1085.9398729580.

The spelling of 1280611327 in words is "one billion, two hundred eighty million, six hundred eleven thousand, three hundred twenty-seven".