11133123131 has 32 divisors (see below), whose sum is σ = 12886655040. Its totient is φ = 9531385344.

The previous prime is 11133123107. The next prime is 11133123143. The reversal of 11133123131 is 13132133111.

It is not a de Polignac number, because 11133123131 - 2³⁰ = 10059381307 is a prime.

It is a super-2 number, since 2×11133123131² (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 (11133123151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11166125 + ... + 11167121.

It is an arithmetic number, because the mean of its divisors is an integer number (402707970).

Almost surely, 2^11133123131 is an apocalyptic number.

11133123131 is a deficient number, since it is larger than the sum of its proper divisors (1753531909).

11133123131 is a wasteful number, since it uses less digits than its factorization.

11133123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935.

The product of its digits is 162, while the sum is 20.

Adding to 11133123131 its reverse (13132133111), we get a palindrome (24265256242).

The spelling of 11133123131 in words is "eleven billion, one hundred thirty-three million, one hundred twenty-three thousand, one hundred thirty-one".