131136224 has 24 divisors (see below), whose sum is σ = 259484400. Its totient is φ = 65235456.

The previous prime is 131136211. The next prime is 131136259. The reversal of 131136224 is 422631131.

It is a self number, because there is not a number n which added to its sum of digits gives 131136224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3929 + ... + 16664.

It is an arithmetic number, because the mean of its divisors is an integer number (10811850).

Almost surely, 2^131136224 is an apocalyptic number.

It is an amenable number.

131136224 is a deficient number, since it is larger than the sum of its proper divisors (128348176).

131136224 is a wasteful number, since it uses less digits than its factorization.

131136224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20802 (or 20794 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 131136224 is about 11451.4725690629. The cubic root of 131136224 is about 508.0512895907.

Adding to 131136224 its reverse (422631131), we get a palindrome (553767355).

The spelling of 131136224 in words is "one hundred thirty-one million, one hundred thirty-six thousand, two hundred twenty-four".