131230242 has 96 divisors (see below), whose sum is σ = 353808000. Its totient is φ = 34536960.

The previous prime is 131230241. The next prime is 131230247. The reversal of 131230242 is 242032131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (131230241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42259 + ... + 45257.

It is an arithmetic number, because the mean of its divisors is an integer number (3685500).

Almost surely, 2^131230242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131230242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176904000).

131230242 is an abundant number, since it is smaller than the sum of its proper divisors (222577758).

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

131230242 is a wasteful number, since it uses less digits than its factorization.

131230242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048 (or 3045 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 131230242 is about 11455.5768951197. The cubic root of 131230242 is about 508.1726762271.

Adding to 131230242 its reverse (242032131), we get a palindrome (373262373).

The spelling of 131230242 in words is "one hundred thirty-one million, two hundred thirty thousand, two hundred forty-two".