135471 has 8 divisors (see below), whose sum is σ = 206464. Its totient is φ = 77400.

The previous prime is 135469. The next prime is 135479. The reversal of 135471 is 174531.

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

It is not a de Polignac number, because 135471 - 2¹ = 135469 is a prime.

It is a super-3 number, since 3×135471³ = 7458650625276333, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6451 = 135471 / (1 + 3 + 5 + 4 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 135471.

It is not an unprimeable number, because it can be changed into a prime (135479) 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, 3205 + ... + 3246.

It is an arithmetic number, because the mean of its divisors is an integer number (25808).

2¹³⁵⁴⁷¹ is an apocalyptic number.

135471 is a deficient number, since it is larger than the sum of its proper divisors (70993).

135471 is an equidigital number, since it uses as much as digits as its factorization.

135471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461.

The product of its digits is 420, while the sum is 21.

The square root of 135471 is about 368.0638531559. The cubic root of 135471 is about 51.3588683139.

Subtracting 135471 from its reverse (174531), we obtain a triangular number (39060 = T₂₇₉).

It can be divided in two parts, 135 and 471, that added together give a palindrome (606).

The spelling of 135471 in words is "one hundred thirty-five thousand, four hundred seventy-one".