11131020123 has 16 divisors (see below), whose sum is σ = 14878438176. Its totient is φ = 7402164480.

The previous prime is 11131020107. The next prime is 11131020127. The reversal of 11131020123 is 32102013111.

It is a happy number.

It is not a de Polignac number, because 11131020123 - 2⁴ = 11131020107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11131020127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3163161 + ... + 3166677.

It is an arithmetic number, because the mean of its divisors is an integer number (929902386).

Almost surely, 2^11131020123 is an apocalyptic number.

11131020123 is a deficient number, since it is larger than the sum of its proper divisors (3747418053).

11131020123 is a wasteful number, since it uses less digits than its factorization.

11131020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11131020123 its reverse (32102013111), we get a palindrome (43233033234).

The spelling of 11131020123 in words is "eleven billion, one hundred thirty-one million, twenty thousand, one hundred twenty-three".