131020431340242 has 32 divisors (see below), whose sum is σ = 273437663063040. Its totient is φ = 41774062041360.

The previous prime is 131020431340241. The next prime is 131020431340259. The reversal of 131020431340242 is 242043134020131.

It is not an unprimeable number, because it can be changed into a prime (131020431340241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3783267 + ... + 16623897.

It is an arithmetic number, because the mean of its divisors is an integer number (8544926970720).

Almost surely, 2^{131020431340242} is an apocalyptic number.

131020431340242 is an abundant number, since it is smaller than the sum of its proper divisors (142417231722798).

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

131020431340242 is a wasteful number, since it uses less digits than its factorization.

131020431340242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12914598.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 131020431340242 its reverse (242043134020131), we get a palindrome (373063565360373).

The spelling of 131020431340242 in words is "one hundred thirty-one trillion, twenty billion, four hundred thirty-one million, three hundred forty thousand, two hundred forty-two".