131020443431242 has 8 divisors (see below), whose sum is σ = 196532030024676. Its totient is φ = 65509766756352.

The previous prime is 131020443431231. The next prime is 131020443431243. The reversal of 131020443431242 is 242134344020131.

It can be written as a sum of positive squares in 2 ways, for example, as 124375601969161 + 6644841462081 = 11152381^2 + 2577759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 131020443431198 and 131020443431207.

It is not an unprimeable number, because it can be changed into a prime (131020443431243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227119543 + ... + 227695690.

Almost surely, 2^{131020443431242} is an apocalyptic number.

131020443431242 is a deficient number, since it is larger than the sum of its proper divisors (65511586593434).

131020443431242 is a wasteful number, since it uses less digits than its factorization.

131020443431242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454959272.

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

Adding to 131020443431242 its reverse (242134344020131), we get a palindrome (373154787451373).

The spelling of 131020443431242 in words is "one hundred thirty-one trillion, twenty billion, four hundred forty-three million, four hundred thirty-one thousand, two hundred forty-two".