131224232 has 16 divisors (see below), whose sum is σ = 246421140. Its totient is φ = 65511936.

The previous prime is 131224229. The next prime is 131224243. The reversal of 131224232 is 232422131.

It can be written as a sum of positive squares in 2 ways, for example, as 126922756 + 4301476 = 11266^2 + 2074^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6803 + ... + 17570.

Almost surely, 2^131224232 is an apocalyptic number.

It is an amenable number.

131224232 is a deficient number, since it is larger than the sum of its proper divisors (115196908).

131224232 is a wasteful number, since it uses less digits than its factorization.

131224232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25052 (or 25048 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 131224232 is about 11455.3145744672. The cubic root of 131224232 is about 508.1649184513.

Adding to 131224232 its reverse (232422131), we get a palindrome (363646363).

It can be divided in two parts, 13122 and 4232, that multiplied together give a square (55532304 = 7452²).

The spelling of 131224232 in words is "one hundred thirty-one million, two hundred twenty-four thousand, two hundred thirty-two".