131212224231442 has 16 divisors (see below), whose sum is σ = 196859658016512. Its totient is φ = 65592338760640.

The previous prime is 131212224231409. The next prime is 131212224231553. The reversal of 131212224231442 is 244132422212131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131212224231398 and 131212224231407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655361283 + ... + 655561465.

It is an arithmetic number, because the mean of its divisors is an integer number (12303728626032).

Almost surely, 2^{131212224231442} is an apocalyptic number.

131212224231442 is a deficient number, since it is larger than the sum of its proper divisors (65647433785070).

131212224231442 is a wasteful number, since it uses less digits than its factorization.

131212224231442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267353.

The product of its digits is 36864, while the sum is 34.

Adding to 131212224231442 its reverse (244132422212131), we get a palindrome (375344646443573).

The spelling of 131212224231442 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred twenty-four million, two hundred thirty-one thousand, four hundred forty-two".