131423330142 has 128 divisors (see below), whose sum is σ = 338479585920. Its totient is φ = 37435115520.

The previous prime is 131423330141. The next prime is 131423330209. The reversal of 131423330142 is 241033324131.

It is a happy number.

131423330142 is a `hidden beast` number, since 1 + 314 + 2 + 3 + 3 + 301 + 42 = 666.

It is a super-2 number, since 2×131423330142² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131423330141) 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 in 63 ways as a sum of consecutive naturals, for example, 637708 + ... + 818240.

It is an arithmetic number, because the mean of its divisors is an integer number (2644371765).

Almost surely, 2^131423330142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131423330142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169239792960).

131423330142 is an abundant number, since it is smaller than the sum of its proper divisors (207056255778).

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

131423330142 is a wasteful number, since it uses less digits than its factorization.

131423330142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180635 (or 180629 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 131423330142 its reverse (241033324131), we get a palindrome (372456654273).

The spelling of 131423330142 in words is "one hundred thirty-one billion, four hundred twenty-three million, three hundred thirty thousand, one hundred forty-two".