11311310142 has 72 divisors (see below), whose sum is σ = 27307770672. Its totient is φ = 3380667840.

The previous prime is 11311310119. The next prime is 11311310159. The reversal of 11311310142 is 24101311311.

It is a happy number.

11311310142 is a `hidden beast` number, since 1 + 1 + 311 + 310 + 1 + 42 = 666.

11311310142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 123423 + ... + 194565.

Almost surely, 2^11311310142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11311310142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13653885336).

11311310142 is an abundant number, since it is smaller than the sum of its proper divisors (15996460530).

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

11311310142 is a wasteful number, since it uses less digits than its factorization.

11311310142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71246 (or 71232 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11311310142 its reverse (24101311311), we get a palindrome (35412621453).

The spelling of 11311310142 in words is "eleven billion, three hundred eleven million, three hundred ten thousand, one hundred forty-two".