131323224 has 32 divisors (see below), whose sum is σ = 328687920. Its totient is φ = 43723776.

The previous prime is 131323189. The next prime is 131323253. The reversal of 131323224 is 422323131.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 131323224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22144 + ... + 27440.

Almost surely, 2^131323224 is an apocalyptic number.

It is an amenable number.

131323224 is an abundant number, since it is smaller than the sum of its proper divisors (197364696).

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

131323224 is a wasteful number, since it uses less digits than its factorization.

131323224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339 (or 6335 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 131323224 is about 11459.6345491468. The cubic root of 131323224 is about 508.2926682750.

Adding to 131323224 its reverse (422323131), we get a palindrome (553646355).

The spelling of 131323224 in words is "one hundred thirty-one million, three hundred twenty-three thousand, two hundred twenty-four".