131135429 has 4 divisors (see below), whose sum is σ = 131698476. Its totient is φ = 130572384.

The previous prime is 131135413. The next prime is 131135447. The reversal of 131135429 is 924531131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17222500 + 113912929 = 4150^2 + 10673^2 .

It is a cyclic number.

It is not a de Polignac number, because 131135429 - 2⁴ = 131135413 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 (131135479) 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, 281174 + ... + 281639.

It is an arithmetic number, because the mean of its divisors is an integer number (32924619).

Almost surely, 2^131135429 is an apocalyptic number.

It is an amenable number.

131135429 is a deficient number, since it is larger than the sum of its proper divisors (563047).

131135429 is an equidigital number, since it uses as much as digits as its factorization.

131135429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563046.

The product of its digits is 3240, while the sum is 29.

The square root of 131135429 is about 11451.4378573173. The cubic root of 131135429 is about 508.0502629189.

The spelling of 131135429 in words is "one hundred thirty-one million, one hundred thirty-five thousand, four hundred twenty-nine".