134509431 has 16 divisors (see below), whose sum is σ = 205772544. Its totient is φ = 76560384.

The previous prime is 134509399. The next prime is 134509447. The reversal of 134509431 is 134905431.

It is not a de Polignac number, because 134509431 - 2⁵ = 134509399 is a prime.

It is a super-2 number, since 2×134509431² = 36185574055887522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134509471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7065 + ... + 17858.

It is an arithmetic number, because the mean of its divisors is an integer number (12860784).

Almost surely, 2^134509431 is an apocalyptic number.

134509431 is a deficient number, since it is larger than the sum of its proper divisors (71263113).

134509431 is a wasteful number, since it uses less digits than its factorization.

134509431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25190.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 134509431 is about 11597.8200968975. The cubic root of 134509431 is about 512.3706511560.

It can be divided in two parts, 134509 and 431, that added together give a triangular number (134940 = T₅₁₉).

The spelling of 134509431 in words is "one hundred thirty-four million, five hundred nine thousand, four hundred thirty-one".