135411023 has 4 divisors (see below), whose sum is σ = 147721128. Its totient is φ = 123100920.

The previous prime is 135411019. The next prime is 135411047. The reversal of 135411023 is 320114531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135411023 - 2² = 135411019 is a prime.

It is a super-2 number, since 2×135411023² = 36672290299813058, 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 = 135410986 and 135411004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135411013) 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, 6155036 + ... + 6155057.

It is an arithmetic number, because the mean of its divisors is an integer number (36930282).

Almost surely, 2^135411023 is an apocalyptic number.

135411023 is a deficient number, since it is larger than the sum of its proper divisors (12310105).

135411023 is a wasteful number, since it uses less digits than its factorization.

135411023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12310104.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 135411023 is about 11636.6242097956. The cubic root of 135411023 is about 513.5128783406.

Adding to 135411023 its reverse (320114531), we get a palindrome (455525554).

The spelling of 135411023 in words is "one hundred thirty-five million, four hundred eleven thousand, twenty-three".