131201313340442 has 16 divisors (see below), whose sum is σ = 197106641435592. Its totient is φ = 65499147769920.

The previous prime is 131201313340439. The next prime is 131201313340469. The reversal of 131201313340442 is 244043313102131.

It can be written as a sum of positive squares in 4 ways, for example, as 130147506384841 + 1053806955601 = 11408221^2 + 1026551^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131201313340399 and 131201313340408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6617909 + ... + 17498552.

Almost surely, 2^{131201313340442} is an apocalyptic number.

131201313340442 is a deficient number, since it is larger than the sum of its proper divisors (65905328095150).

131201313340442 is a wasteful number, since it uses less digits than its factorization.

131201313340442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24120673.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 131201313340442 its reverse (244043313102131), we get a palindrome (375244626442573).

The spelling of 131201313340442 in words is "one hundred thirty-one trillion, two hundred one billion, three hundred thirteen million, three hundred forty thousand, four hundred forty-two".