135355623 has 16 divisors (see below), whose sum is σ = 195669600. Its totient is φ = 82733184.

The previous prime is 135355613. The next prime is 135355669. The reversal of 135355623 is 326553531.

It is not a de Polignac number, because 135355623 - 2⁹ = 135355111 is a prime.

It is a super-2 number, since 2×135355623² = 36642289355436258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135355603) 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 15 ways as a sum of consecutive naturals, for example, 5836 + ... + 17457.

It is an arithmetic number, because the mean of its divisors is an integer number (12229350).

Almost surely, 2^135355623 is an apocalyptic number.

135355623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135355623 is a deficient number, since it is larger than the sum of its proper divisors (60313977).

135355623 is a wasteful number, since it uses less digits than its factorization.

135355623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23458.

The product of its digits is 40500, while the sum is 33.

The square root of 135355623 is about 11634.2435508287. The cubic root of 135355623 is about 513.4428385133.

The spelling of 135355623 in words is "one hundred thirty-five million, three hundred fifty-five thousand, six hundred twenty-three".