131044228 has 72 divisors (see below), whose sum is σ = 287165088. Its totient is φ = 51980544.

The previous prime is 131044219. The next prime is 131044229. The reversal of 131044228 is 822440131.

131044228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (131044229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222951 + ... + 223537.

It is an arithmetic number, because the mean of its divisors is an integer number (3988404).

Almost surely, 2^131044228 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 131044228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143582544).

131044228 is an abundant number, since it is smaller than the sum of its proper divisors (156120860).

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

131044228 is a wasteful number, since it uses less digits than its factorization.

131044228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 131044228 is about 11447.4550883592. The cubic root of 131044228 is about 507.9324573850.

Adding to 131044228 its reverse (822440131), we get a palindrome (953484359).

The spelling of 131044228 in words is "one hundred thirty-one million, forty-four thousand, two hundred twenty-eight".