1230051311 has 2 divisors, whose sum is σ = 1230051312. Its totient is φ = 1230051310.

The previous prime is 1230051307. The next prime is 1230051323. The reversal of 1230051311 is 1131500321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1230051311 - 2² = 1230051307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1230051311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230051341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615025655 + 615025656.

It is an arithmetic number, because the mean of its divisors is an integer number (615025656).

Almost surely, 2^1230051311 is an apocalyptic number.

1230051311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230051311 is an equidigital number, since it uses as much as digits as its factorization.

1230051311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1230051311 is about 35072.0873487735. The cubic root of 1230051311 is about 1071.4561683245.

Adding to 1230051311 its reverse (1131500321), we get a palindrome (2361551632).

The spelling of 1230051311 in words is "one billion, two hundred thirty million, fifty-one thousand, three hundred eleven".