131224604 has 12 divisors (see below), whose sum is σ = 262449264. Its totient is φ = 56239104.

The previous prime is 131224601. The next prime is 131224627. The reversal of 131224604 is 406422131.

131224604 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 131224604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131224601) by changing a digit.

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, 2343269 + ... + 2343324.

It is an arithmetic number, because the mean of its divisors is an integer number (21870772).

Almost surely, 2^131224604 is an apocalyptic number.

131224604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131224604 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131224604 is a wasteful number, since it uses less digits than its factorization.

131224604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686604 (or 4686602 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 131224604 is about 11455.3308114607. The cubic root of 131224604 is about 508.1653986399.

Adding to 131224604 its reverse (406422131), we get a palindrome (537646735).

The spelling of 131224604 in words is "one hundred thirty-one million, two hundred twenty-four thousand, six hundred four".