131420224 has 56 divisors (see below), whose sum is σ = 282659328. Its totient is φ = 60264960.

The previous prime is 131420173. The next prime is 131420269. The reversal of 131420224 is 422024131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158499 + ... + 159325.

It is an arithmetic number, because the mean of its divisors is an integer number (5047488).

Almost surely, 2^131420224 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 131420224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141329664).

131420224 is an abundant number, since it is smaller than the sum of its proper divisors (151239104).

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

131420224 is a wasteful number, since it uses less digits than its factorization.

131420224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 131420224 is about 11463.8660145694. The cubic root of 131420224 is about 508.4177851507.

Adding to 131420224 its reverse (422024131), we get a palindrome (553444355).

The spelling of 131420224 in words is "one hundred thirty-one million, four hundred twenty thousand, two hundred twenty-four".