131946929 has 4 divisors (see below), whose sum is σ = 137683776. Its totient is φ = 126210084.

The previous prime is 131946923. The next prime is 131946931. The reversal of 131946929 is 929649131.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131946929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131946929.

It is not an unprimeable number, because it can be changed into a prime (131946923) 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, 2868389 + ... + 2868434.

It is an arithmetic number, because the mean of its divisors is an integer number (34420944).

Almost surely, 2^131946929 is an apocalyptic number.

It is an amenable number.

131946929 is a deficient number, since it is larger than the sum of its proper divisors (5736847).

131946929 is an equidigital number, since it uses as much as digits as its factorization.

131946929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5736846.

The product of its digits is 104976, while the sum is 44.

The square root of 131946929 is about 11486.8154420623. The cubic root of 131946929 is about 509.0960907974.

The spelling of 131946929 in words is "one hundred thirty-one million, nine hundred forty-six thousand, nine hundred twenty-nine".