131201431400442 has 16 divisors (see below), whose sum is σ = 282587698401120. Its totient is φ = 40369671200112.

The previous prime is 131201431400441. The next prime is 131201431400491. The reversal of 131201431400442 is 244004134102131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131201431400441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841034816592 + ... + 841034816747.

It is an arithmetic number, because the mean of its divisors is an integer number (17661731150070).

Almost surely, 2^{131201431400442} is an apocalyptic number.

131201431400442 is an abundant number, since it is smaller than the sum of its proper divisors (151386267000678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131201431400442 is a wasteful number, since it uses less digits than its factorization.

131201431400442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682069633357.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 131201431400442 its reverse (244004134102131), we get a palindrome (375205565502573).

The spelling of 131201431400442 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred thirty-one million, four hundred thousand, four hundred forty-two".