131644223 has 4 divisors (see below), whose sum is σ = 132011280. Its totient is φ = 131277168.

The previous prime is 131644211. The next prime is 131644273. The reversal of 131644223 is 322446131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131644223 - 2⁴ = 131644207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131644192 and 131644201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131644273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182990 + ... + 183707.

It is an arithmetic number, because the mean of its divisors is an integer number (33002820).

Almost surely, 2^131644223 is an apocalyptic number.

131644223 is a deficient number, since it is larger than the sum of its proper divisors (367057).

131644223 is an equidigital number, since it uses as much as digits as its factorization.

131644223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367056.

The product of its digits is 3456, while the sum is 26.

The square root of 131644223 is about 11473.6316395464. The cubic root of 131644223 is about 508.7064784975.

The spelling of 131644223 in words is "one hundred thirty-one million, six hundred forty-four thousand, two hundred twenty-three".