134528731 has 4 divisors (see below), whose sum is σ = 134633752. Its totient is φ = 134423712.

The previous prime is 134528699. The next prime is 134528743. The reversal of 134528731 is 137825431.

134528731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137825431 = 10039 ⋅13729.

It is a cyclic number.

It is not a de Polignac number, because 134528731 - 2⁵ = 134528699 is a prime.

It is a super-2 number, since 2×134528731² = 36195958928940722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134528131) 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, 50565 + ... + 53158.

It is an arithmetic number, because the mean of its divisors is an integer number (33658438).

Almost surely, 2^134528731 is an apocalyptic number.

134528731 is a deficient number, since it is larger than the sum of its proper divisors (105021).

134528731 is a wasteful number, since it uses less digits than its factorization.

134528731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105020.

The product of its digits is 20160, while the sum is 34.

The square root of 134528731 is about 11598.6521199664. The cubic root of 134528731 is about 512.3951557095.

The spelling of 134528731 in words is "one hundred thirty-four million, five hundred twenty-eight thousand, seven hundred thirty-one".