131444553 has 16 divisors (see below), whose sum is σ = 178907456. Its totient is φ = 85821120.

The previous prime is 131444549. The next prime is 131444581. The reversal of 131444553 is 355444131.

It is not a de Polignac number, because 131444553 - 2² = 131444549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131444553.

It is not an unprimeable number, because it can be changed into a prime (131434553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34575 + ... + 38187.

It is an arithmetic number, because the mean of its divisors is an integer number (11181716).

Almost surely, 2^131444553 is an apocalyptic number.

It is an amenable number.

131444553 is a deficient number, since it is larger than the sum of its proper divisors (47462903).

131444553 is a wasteful number, since it uses less digits than its factorization.

131444553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864.

The product of its digits is 14400, while the sum is 30.

The square root of 131444553 is about 11464.9270821929. The cubic root of 131444553 is about 508.4491566111.

Adding to 131444553 its reverse (355444131), we get a palindrome (486888684).

The spelling of 131444553 in words is "one hundred thirty-one million, four hundred forty-four thousand, five hundred fifty-three".