131212320344242 has 16 divisors (see below), whose sum is σ = 201106061361792. Its totient is φ = 64178354801520.

The previous prime is 131212320344213. The next prime is 131212320344263. The reversal of 131212320344242 is 242443023212131.

It is a junction number, because it is equal to n+sod(n) for n = 131212320344198 and 131212320344207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346871073 + ... + 347249140.

It is an arithmetic number, because the mean of its divisors is an integer number (12569128835112).

Almost surely, 2^{131212320344242} is an apocalyptic number.

131212320344242 is a deficient number, since it is larger than the sum of its proper divisors (69893741017550).

131212320344242 is a wasteful number, since it uses less digits than its factorization.

131212320344242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694122273.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 131212320344242 its reverse (242443023212131), we get a palindrome (373655343556373).

The spelling of 131212320344242 in words is "one hundred thirty-one trillion, two hundred twelve billion, three hundred twenty million, three hundred forty-four thousand, two hundred forty-two".