135620023 has 8 divisors (see below), whose sum is σ = 169084800. Its totient is φ = 105677880.

The previous prime is 135620021. The next prime is 135620027. The reversal of 135620023 is 320026531.

135620023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135620023 - 2¹ = 135620021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135619976 and 135620003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135620021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880573 + ... + 880726.

It is an arithmetic number, because the mean of its divisors is an integer number (21135600).

Almost surely, 2^135620023 is an apocalyptic number.

135620023 is a deficient number, since it is larger than the sum of its proper divisors (33464777).

135620023 is a wasteful number, since it uses less digits than its factorization.

135620023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761317.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 135620023 is about 11645.6010149756. The cubic root of 135620023 is about 513.7769361700.

Adding to 135620023 its reverse (320026531), we get a palindrome (455646554).

The spelling of 135620023 in words is "one hundred thirty-five million, six hundred twenty thousand, twenty-three".