11311023011 has 2 divisors, whose sum is σ = 11311023012. Its totient is φ = 11311023010.

The previous prime is 11311022999. The next prime is 11311023047. The reversal of 11311023011 is 11032011311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11311023011 is a prime.

It is a super-2 number, since 2×11311023011² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11311023611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655511505 + 5655511506.

It is an arithmetic number, because the mean of its divisors is an integer number (5655511506).

Almost surely, 2^11311023011 is an apocalyptic number.

11311023011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311023011 is an equidigital number, since it uses as much as digits as its factorization.

11311023011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11311023011 its reverse (11032011311), we get a palindrome (22343034322).

The spelling of 11311023011 in words is "eleven billion, three hundred eleven million, twenty-three thousand, eleven".