131651224 has 16 divisors (see below), whose sum is σ = 247111920. Its totient is φ = 65754720.

The previous prime is 131651207. The next prime is 131651231. The reversal of 131651224 is 422156131.

It is a happy number.

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, 507 + ... + 16234.

It is an arithmetic number, because the mean of its divisors is an integer number (15444495).

Almost surely, 2^131651224 is an apocalyptic number.

It is an amenable number.

131651224 is a deficient number, since it is larger than the sum of its proper divisors (115460696).

131651224 is a wasteful number, since it uses less digits than its factorization.

131651224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17730 (or 17726 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 131651224 is about 11473.9367263377. The cubic root of 131651224 is about 508.7154962142.

The spelling of 131651224 in words is "one hundred thirty-one million, six hundred fifty-one thousand, two hundred twenty-four".