11323123011 has 6 divisors (see below), whose sum is σ = 16355622140. Its totient is φ = 7548748668.

The previous prime is 11323122991. The next prime is 11323123039. The reversal of 11323123011 is 11032132311.

It is not a de Polignac number, because 11323123011 - 2¹⁸ = 11322860867 is a prime.

It is a super-2 number, since 2×11323123011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11323123081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 629062381 + ... + 629062398.

Almost surely, 2^11323123011 is an apocalyptic number.

11323123011 is a deficient number, since it is larger than the sum of its proper divisors (5032499129).

11323123011 is a wasteful number, since it uses less digits than its factorization.

11323123011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258124785 (or 1258124782 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11323123011 its reverse (11032132311), we get a palindrome (22355255322).

The spelling of 11323123011 in words is "eleven billion, three hundred twenty-three million, one hundred twenty-three thousand, eleven".