131224008 has 16 divisors (see below), whose sum is σ = 328060080. Its totient is φ = 43741328.

The previous prime is 131224007. The next prime is 131224021. The reversal of 131224008 is 800422131.

It is not an unprimeable number, because it can be changed into a prime (131224007) 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, 2733810 + ... + 2733857.

It is an arithmetic number, because the mean of its divisors is an integer number (20503755).

Almost surely, 2^131224008 is an apocalyptic number.

It is an amenable number.

131224008 is an abundant number, since it is smaller than the sum of its proper divisors (196836072).

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

131224008 is a wasteful number, since it uses less digits than its factorization.

131224008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5467676 (or 5467672 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 131224008 is about 11455.3047973417. The cubic root of 131224008 is about 508.1646293050.

Adding to 131224008 its reverse (800422131), we get a palindrome (931646139).

The spelling of 131224008 in words is "one hundred thirty-one million, two hundred twenty-four thousand, eight".