134431491 has 8 divisors (see below), whose sum is σ = 179340480. Its totient is φ = 89571752.

The previous prime is 134431489. The next prime is 134431511. The reversal of 134431491 is 194134431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134431491 - 2¹ = 134431489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134431391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5385 + ... + 17258.

It is an arithmetic number, because the mean of its divisors is an integer number (22417560).

Almost surely, 2^134431491 is an apocalyptic number.

134431491 is a deficient number, since it is larger than the sum of its proper divisors (44908989).

134431491 is a wasteful number, since it uses less digits than its factorization.

134431491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24625.

The product of its digits is 5184, while the sum is 30.

The square root of 134431491 is about 11594.4594958109. The cubic root of 134431491 is about 512.2716695359.

The spelling of 134431491 in words is "one hundred thirty-four million, four hundred thirty-one thousand, four hundred ninety-one".