134135431 has 4 divisors (see below), whose sum is σ = 134199664. Its totient is φ = 134071200.

The previous prime is 134135429. The next prime is 134135473. The reversal of 134135431 is 134531431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134531431 = 383 ⋅351257.

It is a cyclic number.

It is not a de Polignac number, because 134135431 - 2¹ = 134135429 is a prime.

It is a super-2 number, since 2×134135431² = 35984627699111522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134135396 and 134135405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134135531) 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, 28875 + ... + 33196.

It is an arithmetic number, because the mean of its divisors is an integer number (33549916).

Almost surely, 2^134135431 is an apocalyptic number.

134135431 is a deficient number, since it is larger than the sum of its proper divisors (64233).

134135431 is an equidigital number, since it uses as much as digits as its factorization.

134135431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64232.

The product of its digits is 2160, while the sum is 25.

The square root of 134135431 is about 11581.6851537244. The cubic root of 134135431 is about 511.8953325575.

Adding to 134135431 its reverse (134531431), we get a palindrome (268666862).

The spelling of 134135431 in words is "one hundred thirty-four million, one hundred thirty-five thousand, four hundred thirty-one".