131013043144 has 8 divisors (see below), whose sum is σ = 245649455910. Its totient is φ = 65506521568.

The previous prime is 131013043123. The next prime is 131013043177. The reversal of 131013043144 is 441340310131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 128638430244 + 2374612900 = 358662^2 + 48730^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8188315189 + ... + 8188315204.

Almost surely, 2^131013043144 is an apocalyptic number.

It is an amenable number.

131013043144 is a deficient number, since it is larger than the sum of its proper divisors (114636412766).

131013043144 is a wasteful number, since it uses less digits than its factorization.

131013043144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16376630399 (or 16376630395 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 131013043144 its reverse (441340310131), we get a palindrome (572353353275).

The spelling of 131013043144 in words is "one hundred thirty-one billion, thirteen million, forty-three thousand, one hundred forty-four".