135323111023 has 4 divisors (see below), whose sum is σ = 138980492440. Its totient is φ = 131665729608.

The previous prime is 135323110991. The next prime is 135323111039. The reversal of 135323111023 is 320111323531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320111323531 = 65587 ⋅4880713.

It is a cyclic number.

It is not a de Polignac number, because 135323111023 - 2⁵ = 135323110991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135323111723) 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, 1828690653 + ... + 1828690726.

It is an arithmetic number, because the mean of its divisors is an integer number (34745123110).

Almost surely, 2^135323111023 is an apocalyptic number.

135323111023 is a deficient number, since it is larger than the sum of its proper divisors (3657381417).

135323111023 is an equidigital number, since it uses as much as digits as its factorization.

135323111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657381416.

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 135323111023 its reverse (320111323531), we get a palindrome (455434434554).

The spelling of 135323111023 in words is "one hundred thirty-five billion, three hundred twenty-three million, one hundred eleven thousand, twenty-three".