135012023 has 4 divisors (see below), whose sum is σ = 139667640. Its totient is φ = 130356408.

The previous prime is 135012019. The next prime is 135012089. The reversal of 135012023 is 320210531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320210531 = 23 ⋅13922197.

It is a cyclic number.

It is not a de Polignac number, because 135012023 - 2² = 135012019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135011992 and 135012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135062023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2327765 + ... + 2327822.

It is an arithmetic number, because the mean of its divisors is an integer number (34916910).

Almost surely, 2^135012023 is an apocalyptic number.

135012023 is a deficient number, since it is larger than the sum of its proper divisors (4655617).

135012023 is an equidigital number, since it uses as much as digits as its factorization.

135012023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4655616.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 135012023 is about 11619.4674146451. The cubic root of 135012023 is about 513.0080124701.

Adding to 135012023 its reverse (320210531), we get a palindrome (455222554).

The spelling of 135012023 in words is "one hundred thirty-five million, twelve thousand, twenty-three".