131444845 has 16 divisors (see below), whose sum is σ = 180794880. Its totient is φ = 89869824.

The previous prime is 131444843. The next prime is 131444879. The reversal of 131444845 is 548444131.

It is a cyclic number.

It is not a de Polignac number, because 131444845 - 2¹ = 131444843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131444845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131444843) 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, 7036 + ... + 17674.

It is an arithmetic number, because the mean of its divisors is an integer number (11299680).

Almost surely, 2^131444845 is an apocalyptic number.

It is an amenable number.

131444845 is a deficient number, since it is larger than the sum of its proper divisors (49350035).

131444845 is a wasteful number, since it uses less digits than its factorization.

131444845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11004.

The product of its digits is 30720, while the sum is 34.

The square root of 131444845 is about 11464.9398166759. The cubic root of 131444845 is about 508.4495331122.

Adding to 131444845 its reverse (548444131), we get a palindrome (679888976).

The spelling of 131444845 in words is "one hundred thirty-one million, four hundred forty-four thousand, eight hundred forty-five".