135135023 has 4 divisors (see below), whose sum is σ = 143084160. Its totient is φ = 127185888.

The previous prime is 135135017. The next prime is 135135029. The reversal of 135135023 is 320531531.

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

It is an interprime number because it is at equal distance from previous prime (135135017) and next prime (135135029).

It is a cyclic number.

It is not a de Polignac number, because 135135023 - 2¹² = 135130927 is a prime.

It is a super-2 number, since 2×135135023² = 36522948882421058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135135023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135135029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3974543 + ... + 3974576.

It is an arithmetic number, because the mean of its divisors is an integer number (35771040).

Almost surely, 2^135135023 is an apocalyptic number.

135135023 is a deficient number, since it is larger than the sum of its proper divisors (7949137).

135135023 is an equidigital number, since it uses as much as digits as its factorization.

135135023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7949136.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 135135023 is about 11624.7590512664. The cubic root of 135135023 is about 513.1637537436.

Adding to 135135023 its reverse (320531531), we get a palindrome (455666554).

The spelling of 135135023 in words is "one hundred thirty-five million, one hundred thirty-five thousand, twenty-three".