131322444 has 24 divisors (see below), whose sum is σ = 334275648. Its totient is φ = 39794640.

The previous prime is 131322431. The next prime is 131322449. The reversal of 131322444 is 444223131.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (131322449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497302 + ... + 497565.

It is an arithmetic number, because the mean of its divisors is an integer number (13928152).

Almost surely, 2^131322444 is an apocalyptic number.

It is an amenable number.

131322444 is an abundant number, since it is smaller than the sum of its proper divisors (202953204).

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

131322444 is a wasteful number, since it uses less digits than its factorization.

131322444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994885 (or 994883 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 131322444 is about 11459.6005165974. The cubic root of 131322444 is about 508.2916619308.

Adding to 131322444 its reverse (444223131), we get a palindrome (575545575).

It can be divided in two parts, 13132 and 2444, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 131322444 in words is "one hundred thirty-one million, three hundred twenty-two thousand, four hundred forty-four".