131323242 has 8 divisors (see below), whose sum is σ = 262646496. Its totient is φ = 43774412.

The previous prime is 131323189. The next prime is 131323253. The reversal of 131323242 is 242323131.

It is a sphenic number, since it is the product of 3 distinct primes.

131323242 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10943598 + ... + 10943609.

It is an arithmetic number, because the mean of its divisors is an integer number (32830812).

Almost surely, 2^131323242 is an apocalyptic number.

131323242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131323242 is a wasteful number, since it uses less digits than its factorization.

131323242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21887212.

The product of its digits is 864, while the sum is 21.

The square root of 131323242 is about 11459.6353345122. The cubic root of 131323242 is about 508.2926914983.

Adding to 131323242 its reverse (242323131), we get a palindrome (373646373).

The spelling of 131323242 in words is "one hundred thirty-one million, three hundred twenty-three thousand, two hundred forty-two".