13151144 has 8 divisors (see below), whose sum is σ = 24658410. Its totient is φ = 6575568.

The previous prime is 13151113. The next prime is 13151167. The reversal of 13151144 is 44115131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7628644 + 5522500 = 2762^2 + 2350^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821939 + ... + 821954.

Almost surely, 2^13151144 is an apocalyptic number.

It is an amenable number.

13151144 is a deficient number, since it is larger than the sum of its proper divisors (11507266).

13151144 is a wasteful number, since it uses less digits than its factorization.

13151144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643899 (or 1643895 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 13151144 is about 3626.4506063091. The cubic root of 13151144 is about 236.0412165875.

Adding to 13151144 its reverse (44115131), we get a palindrome (57266275).

The spelling of 13151144 in words is "thirteen million, one hundred fifty-one thousand, one hundred forty-four".