135342331 has 4 divisors (see below), whose sum is σ = 135366552. Its totient is φ = 135318112.

The previous prime is 135342313. The next prime is 135342343. The reversal of 135342331 is 133243531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133243531 = 23 ⋅5793197.

It is a cyclic number.

It is not a de Polignac number, because 135342331 - 2⁵ = 135342299 is a prime.

It is a super-2 number, since 2×135342331² = 36635093121027122, 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 = 135342296 and 135342305.

It is not an unprimeable number, because it can be changed into a prime (135342131) 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, 1011 + ... + 16483.

It is an arithmetic number, because the mean of its divisors is an integer number (33841638).

Almost surely, 2^135342331 is an apocalyptic number.

135342331 is a deficient number, since it is larger than the sum of its proper divisors (24221).

135342331 is an equidigital number, since it uses as much as digits as its factorization.

135342331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24220.

The product of its digits is 3240, while the sum is 25.

The square root of 135342331 is about 11633.6722921011. The cubic root of 135342331 is about 513.4260311691.

Adding to 135342331 its reverse (133243531), we get a palindrome (268585862).

The spelling of 135342331 in words is "one hundred thirty-five million, three hundred forty-two thousand, three hundred thirty-one".