11013312138 has 16 divisors (see below), whose sum is σ = 22085681376. Its totient is φ = 3661261200.

The previous prime is 11013312137. The next prime is 11013312143. The reversal of 11013312138 is 83121331011.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11013312137) 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, 2458288 + ... + 2462763.

It is an arithmetic number, because the mean of its divisors is an integer number (1380355086).

Almost surely, 2^11013312138 is an apocalyptic number.

11013312138 is an abundant number, since it is smaller than the sum of its proper divisors (11072369238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11013312138 is a wasteful number, since it uses less digits than its factorization.

11013312138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921429.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 11013312138 its reverse (83121331011), we get a palindrome (94134643149).

The spelling of 11013312138 in words is "eleven billion, thirteen million, three hundred twelve thousand, one hundred thirty-eight".