131043344 has 80 divisors (see below), whose sum is σ = 286254000. Its totient is φ = 57802752.

The previous prime is 131043343. The next prime is 131043349. The reversal of 131043344 is 443340131.

It can be written as a sum of positive squares in 8 ways, for example, as 24127744 + 106915600 = 4912^2 + 10340^2 .

It is not an unprimeable number, because it can be changed into a prime (131043343) 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, 291632 + ... + 292080.

It is an arithmetic number, because the mean of its divisors is an integer number (3578175).

Almost surely, 2^131043344 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 131043344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143127000).

131043344 is an abundant number, since it is smaller than the sum of its proper divisors (155210656).

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

131043344 is a wasteful number, since it uses less digits than its factorization.

131043344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 131043344 is about 11447.4164770921. The cubic root of 131043344 is about 507.9313152431.

Adding to 131043344 its reverse (443340131), we get a palindrome (574383475).

The spelling of 131043344 in words is "one hundred thirty-one million, forty-three thousand, three hundred forty-four".