135331 has 4 divisors (see below), whose sum is σ = 154672. Its totient is φ = 115992.
The previous prime is 135329. The next prime is 135347. The reversal of 135331 is 133531.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133531 = 67 ⋅1993.
It is a cyclic number.
It is not a de Polignac number, because 135331 - 21 = 135329 is a prime.
It is a super-2 number, since 2×1353312 = 36628959122, which contains 22 as substring.
It is an Ulam number.
It is a plaindrome in base 9.
It is not an unprimeable number, because it can be changed into a prime (135301) 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, 9660 + ... + 9673.
It is an arithmetic number, because the mean of its divisors is an integer number (38668).
2135331 is an apocalyptic number.
135331 is a deficient number, since it is larger than the sum of its proper divisors (19341).
135331 is an equidigital number, since it uses as much as digits as its factorization.
135331 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19340.
The product of its digits is 135, while the sum is 16.
The square root of 135331 is about 367.8736196033. The cubic root of 135331 is about 51.3411702583.
Adding to 135331 its reverse (133531), we get a palindrome (268862).
The spelling of 135331 in words is "one hundred thirty-five thousand, three hundred thirty-one".
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