200131230340042 has 4 divisors (see below), whose sum is σ = 300196845510066. Its totient is φ = 100065615170020.

The previous prime is 200131230340037. The next prime is 200131230340043. The reversal of 200131230340042 is 240043032131002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 196627673715201 + 3503556624841 = 14022399^2 + 1871779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200131230339989 and 200131230340016.

It is not an unprimeable number, because it can be changed into a prime (200131230340043) by changing a digit.

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 as a sum of consecutive naturals, namely, 50032807585009 + ... + 50032807585012.

Almost surely, 2^{200131230340042} is an apocalyptic number.

200131230340042 is a deficient number, since it is larger than the sum of its proper divisors (100065615170024).

200131230340042 is a wasteful number, since it uses less digits than its factorization.

200131230340042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100065615170023.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 200131230340042 its reverse (240043032131002), we get a palindrome (440174262471044).

The spelling of 200131230340042 in words is "two hundred trillion, one hundred thirty-one billion, two hundred thirty million, three hundred forty thousand, forty-two".