131075144 has 8 divisors (see below), whose sum is σ = 245765910. Its totient is φ = 65537568.

The previous prime is 131075143. The next prime is 131075171. The reversal of 131075144 is 441570131.

It can be written as a sum of positive squares in only one way, i.e., 87647044 + 43428100 = 9362^2 + 6590^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (131075143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8192189 + ... + 8192204.

Almost surely, 2^131075144 is an apocalyptic number.

It is an amenable number.

131075144 is a deficient number, since it is larger than the sum of its proper divisors (114690766).

131075144 is a wasteful number, since it uses less digits than its factorization.

131075144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16384399 (or 16384395 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 131075144 is about 11448.8053525248. The cubic root of 131075144 is about 507.9723981118.

The spelling of 131075144 in words is "one hundred thirty-one million, seventy-five thousand, one hundred forty-four".