1266230311 has 2 divisors, whose sum is σ = 1266230312. Its totient is φ = 1266230310.

The previous prime is 1266230299. The next prime is 1266230327. The reversal of 1266230311 is 1130326621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266230311 - 2⁵ = 1266230279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266230611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633115155 + 633115156.

It is an arithmetic number, because the mean of its divisors is an integer number (633115156).

Almost surely, 2^1266230311 is an apocalyptic number.

1266230311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266230311 is an equidigital number, since it uses as much as digits as its factorization.

1266230311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1266230311 is about 35584.1300441644. The cubic root of 1266230311 is about 1081.8595965727.

Adding to 1266230311 its reverse (1130326621), we get a palindrome (2396556932).

The spelling of 1266230311 in words is "one billion, two hundred sixty-six million, two hundred thirty thousand, three hundred eleven".