1301131144 has 8 divisors (see below), whose sum is σ = 2439620910. Its totient is φ = 650565568.

The previous prime is 1301131141. The next prime is 1301131199. The reversal of 1301131144 is 4411311031.

It can be written as a sum of positive squares in only one way, i.e., 667602244 + 633528900 = 25838^2 + 25170^2 .

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 (1301131141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81320689 + ... + 81320704.

Almost surely, 2^1301131144 is an apocalyptic number.

It is an amenable number.

1301131144 is a deficient number, since it is larger than the sum of its proper divisors (1138489766).

1301131144 is a wasteful number, since it uses less digits than its factorization.

1301131144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162641399 (or 162641395 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1301131144 is about 36071.1954889216. The cubic root of 1301131144 is about 1091.7093355296.

Adding to 1301131144 its reverse (4411311031), we get a palindrome (5712442175).

The spelling of 1301131144 in words is "one billion, three hundred one million, one hundred thirty-one thousand, one hundred forty-four".