131123144 has 16 divisors (see below), whose sum is σ = 246015600. Its totient is φ = 65518992.

The previous prime is 131123143. The next prime is 131123171. The reversal of 131123144 is 441321131.

It is not an unprimeable number, because it can be changed into a prime (131123141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10547 + ... + 19325.

It is an arithmetic number, because the mean of its divisors is an integer number (15375975).

Almost surely, 2^131123144 is an apocalyptic number.

It is an amenable number.

131123144 is a deficient number, since it is larger than the sum of its proper divisors (114892456).

131123144 is a wasteful number, since it uses less digits than its factorization.

131123144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10652 (or 10648 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 131123144 is about 11450.9014492310. The cubic root of 131123144 is about 508.0343974063.

Adding to 131123144 its reverse (441321131), we get a palindrome (572444275).

The spelling of 131123144 in words is "one hundred thirty-one million, one hundred twenty-three thousand, one hundred forty-four".