131224240324 has 12 divisors (see below), whose sum is σ = 229673788204. Its totient is φ = 65603157984.

The previous prime is 131224240321. The next prime is 131224240331. The reversal of 131224240324 is 423042422131.

It can be written as a sum of positive squares in 2 ways, for example, as 66749889600 + 64474350724 = 258360^2 + 253918^2 .

It is a super-2 number, since 2×131224240324² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131224240292 and 131224240301.

It is not an unprimeable number, because it can be changed into a prime (131224240321) 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, 2207547 + ... + 2266210.

Almost surely, 2^131224240324 is an apocalyptic number.

It is an amenable number.

131224240324 is a deficient number, since it is larger than the sum of its proper divisors (98449547880).

131224240324 is a wasteful number, since it uses less digits than its factorization.

131224240324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481094 (or 4481092 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 131224240324 its reverse (423042422131), we get a palindrome (554266662455).

The spelling of 131224240324 in words is "one hundred thirty-one billion, two hundred twenty-four million, two hundred forty thousand, three hundred twenty-four".