11145311142 has 32 divisors (see below), whose sum is σ = 25492838400. Its totient is φ = 3182144448.

The previous prime is 11145311071. The next prime is 11145311147. The reversal of 11145311142 is 24111354111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11145311147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31767 + ... + 152642.

It is an arithmetic number, because the mean of its divisors is an integer number (796651200).

Almost surely, 2^11145311142 is an apocalyptic number.

11145311142 is an abundant number, since it is smaller than the sum of its proper divisors (14347527258).

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

11145311142 is a wasteful number, since it uses less digits than its factorization.

11145311142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185860.

The product of its digits is 480, while the sum is 24.

Adding to 11145311142 its reverse (24111354111), we get a palindrome (35256665253).

The spelling of 11145311142 in words is "eleven billion, one hundred forty-five million, three hundred eleven thousand, one hundred forty-two".