131243552 has 48 divisors (see below), whose sum is σ = 287908992. Its totient is φ = 58379520.

The previous prime is 131243503. The next prime is 131243557. The reversal of 131243552 is 255342131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131243557) 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 7 ways as a sum of consecutive naturals, for example, 12578 + ... + 20510.

It is an arithmetic number, because the mean of its divisors is an integer number (5998104).

Almost surely, 2^131243552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131243552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143954496).

131243552 is an abundant number, since it is smaller than the sum of its proper divisors (156665440).

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

131243552 is a wasteful number, since it uses less digits than its factorization.

131243552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8001 (or 7993 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 131243552 is about 11456.1578201420. The cubic root of 131243552 is about 508.1898560823.

Adding to 131243552 its reverse (255342131), we get a palindrome (386585683).

The spelling of 131243552 in words is "one hundred thirty-one million, two hundred forty-three thousand, five hundred fifty-two".