11431211142 has 16 divisors (see below), whose sum is σ = 24621070320. Its totient is φ = 3517295712.

The previous prime is 11431211069. The next prime is 11431211147. The reversal of 11431211142 is 24111213411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431211147) 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, 73276917 + ... + 73277072.

It is an arithmetic number, because the mean of its divisors is an integer number (1538816895).

Almost surely, 2^11431211142 is an apocalyptic number.

11431211142 is an abundant number, since it is smaller than the sum of its proper divisors (13189859178).

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

11431211142 is a wasteful number, since it uses less digits than its factorization.

11431211142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146554007.

The product of its digits is 192, while the sum is 21.

Adding to 11431211142 its reverse (24111213411), we get a palindrome (35542424553).

The spelling of 11431211142 in words is "eleven billion, four hundred thirty-one million, two hundred eleven thousand, one hundred forty-two".