11123131210 has 16 divisors (see below), whose sum is σ = 20487256416. Its totient is φ = 4345781328.

The previous prime is 11123131181. The next prime is 11123131219. The reversal of 11123131210 is 1213132111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11123131219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12933444 + ... + 12934303.

It is an arithmetic number, because the mean of its divisors is an integer number (1280453526).

Almost surely, 2^11123131210 is an apocalyptic number.

11123131210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11123131210 is a deficient number, since it is larger than the sum of its proper divisors (9364125206).

11123131210 is a wasteful number, since it uses less digits than its factorization.

11123131210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25867797.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11123131210 its reverse (1213132111), we get a palindrome (12336263321).

Subtracting from 11123131210 its reverse (1213132111), we obtain a palindrome (9909999099).

The spelling of 11123131210 in words is "eleven billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred ten".