1276320011 has 2 divisors, whose sum is σ = 1276320012. Its totient is φ = 1276320010.

The previous prime is 1276319987. The next prime is 1276320047. The reversal of 1276320011 is 1100236721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1276320011 - 2¹⁰ = 1276318987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1276320061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638160005 + 638160006.

It is an arithmetic number, because the mean of its divisors is an integer number (638160006).

Almost surely, 2^1276320011 is an apocalyptic number.

1276320011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276320011 is an equidigital number, since it uses as much as digits as its factorization.

1276320011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1276320011 is about 35725.6212122337. The cubic root of 1276320011 is about 1084.7255242339.

Adding to 1276320011 its reverse (1100236721), we get a palindrome (2376556732).

The spelling of 1276320011 in words is "one billion, two hundred seventy-six million, three hundred twenty thousand, eleven".