12131314043442 has 32 divisors (see below), whose sum is σ = 26474580924480. Its totient is φ = 3675286413120.

The previous prime is 12131314043423. The next prime is 12131314043549. The reversal of 12131314043442 is 24434041313121.

It is a happy number.

It is a super-2 number, since 2×12131314043442² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21452713 + ... + 22010940.

It is an arithmetic number, because the mean of its divisors is an integer number (827330653890).

Almost surely, 2^{12131314043442} is an apocalyptic number.

12131314043442 is an abundant number, since it is smaller than the sum of its proper divisors (14343266881038).

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

12131314043442 is a wasteful number, since it uses less digits than its factorization.

12131314043442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43467898.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 12131314043442 its reverse (24434041313121), we get a palindrome (36565355356563).

The spelling of 12131314043442 in words is "twelve trillion, one hundred thirty-one billion, three hundred fourteen million, forty-three thousand, four hundred forty-two".