131384429 has 4 divisors (see below), whose sum is σ = 143328480. Its totient is φ = 119440380.

The previous prime is 131384333. The next prime is 131384443. The reversal of 131384429 is 924483131.

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 not a de Polignac number, because 131384429 - 2²⁰ = 130335853 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 (131384489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5972009 + ... + 5972030.

It is an arithmetic number, because the mean of its divisors is an integer number (35832120).

Almost surely, 2^131384429 is an apocalyptic number.

It is an amenable number.

131384429 is a deficient number, since it is larger than the sum of its proper divisors (11944051).

131384429 is a wasteful number, since it uses less digits than its factorization.

131384429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11944050.

The product of its digits is 20736, while the sum is 35.

The square root of 131384429 is about 11462.3046984452. The cubic root of 131384429 is about 508.3716216136.

The spelling of 131384429 in words is "one hundred thirty-one million, three hundred eighty-four thousand, four hundred twenty-nine".