131984729 has 4 divisors (see below), whose sum is σ = 132016080. Its totient is φ = 131953380.

The previous prime is 131984693. The next prime is 131984731. The reversal of 131984729 is 927489131.

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: 927489131 = 1453 ⋅638327.

It is a cyclic number.

It is not a de Polignac number, because 131984729 - 2¹² = 131980633 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 131984729.

It is not an unprimeable number, because it can be changed into a prime (131954729) 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, 8159 + ... + 18180.

It is an arithmetic number, because the mean of its divisors is an integer number (33004020).

Almost surely, 2^131984729 is an apocalyptic number.

It is an amenable number.

131984729 is a deficient number, since it is larger than the sum of its proper divisors (31351).

131984729 is an equidigital number, since it uses as much as digits as its factorization.

131984729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31350.

The product of its digits is 108864, while the sum is 44.

The square root of 131984729 is about 11488.4606888826. The cubic root of 131984729 is about 509.1447012375.

The spelling of 131984729 in words is "one hundred thirty-one million, nine hundred eighty-four thousand, seven hundred twenty-nine".