131885929 has 4 divisors (see below), whose sum is σ = 150726784. Its totient is φ = 113045076.

The previous prime is 131885917. The next prime is 131885951. The reversal of 131885929 is 929588131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 929588131 = 83 ⋅11199857.

It is a cyclic number.

It is not a de Polignac number, because 131885929 - 2⁷ = 131885801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131885969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9420417 + ... + 9420430.

It is an arithmetic number, because the mean of its divisors is an integer number (37681696).

Almost surely, 2^131885929 is an apocalyptic number.

It is an amenable number.

131885929 is a deficient number, since it is larger than the sum of its proper divisors (18840855).

131885929 is an equidigital number, since it uses as much as digits as its factorization.

131885929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18840854.

The product of its digits is 155520, while the sum is 46.

The square root of 131885929 is about 11484.1599170335. The cubic root of 131885929 is about 509.0176257948.

The spelling of 131885929 in words is "one hundred thirty-one million, eight hundred eighty-five thousand, nine hundred twenty-nine".