13100031144 has 96 divisors (see below), whose sum is σ = 35672730600. Its totient is φ = 4342947840.

The previous prime is 13100031143. The next prime is 13100031163. The reversal of 13100031144 is 44113000131.

13100031144 is a `hidden beast` number, since 1 + 310 + 0 + 0 + 311 + 44 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13016528100 + 83503044 = 114090^2 + 9138^2 .

It is a super-2 number, since 2×13100031144² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13100031143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19464792 + ... + 19465464.

Almost surely, 2^13100031144 is an apocalyptic number.

It is an amenable number.

13100031144 is an abundant number, since it is smaller than the sum of its proper divisors (22572699456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13100031144 is a wasteful number, since it uses less digits than its factorization.

13100031144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13100031144 its reverse (44113000131), we get a palindrome (57213031275).

The spelling of 13100031144 in words is "thirteen billion, one hundred million, thirty-one thousand, one hundred forty-four".