131228679 has 16 divisors (see below), whose sum is σ = 178421120. Its totient is φ = 85773600.

The previous prime is 131228663. The next prime is 131228701. The reversal of 131228679 is 976822131.

It is not a de Polignac number, because 131228679 - 2⁴ = 131228663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131228609) 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 15 ways as a sum of consecutive naturals, for example, 44604 + ... + 47454.

It is an arithmetic number, because the mean of its divisors is an integer number (11151320).

Almost surely, 2^131228679 is an apocalyptic number.

131228679 is a deficient number, since it is larger than the sum of its proper divisors (47192441).

131228679 is a wasteful number, since it uses less digits than its factorization.

131228679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150.

The product of its digits is 36288, while the sum is 39.

The square root of 131228679 is about 11455.5086748690. The cubic root of 131228679 is about 508.1706587119.

The spelling of 131228679 in words is "one hundred thirty-one million, two hundred twenty-eight thousand, six hundred seventy-nine".