135531473 has 16 divisors (see below), whose sum is σ = 174428160. Its totient is φ = 102200400.

The previous prime is 135531467. The next prime is 135531521. The reversal of 135531473 is 374135531.

It is a cyclic number.

It is not a de Polignac number, because 135531473 - 2⁴ = 135531457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135531073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26003 + ... + 30776.

It is an arithmetic number, because the mean of its divisors is an integer number (10901760).

Almost surely, 2^135531473 is an apocalyptic number.

It is an amenable number.

135531473 is a deficient number, since it is larger than the sum of its proper divisors (38896687).

135531473 is a wasteful number, since it uses less digits than its factorization.

135531473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56828.

The product of its digits is 18900, while the sum is 32.

The square root of 135531473 is about 11641.7985294369. The cubic root of 135531473 is about 513.6650921814.

The spelling of 135531473 in words is "one hundred thirty-five million, five hundred thirty-one thousand, four hundred seventy-three".