135213533 has 16 divisors (see below), whose sum is σ = 167139840. Its totient is φ = 106517376.

The previous prime is 135213523. The next prime is 135213539. The reversal of 135213533 is 335312531.

135213533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135213533 - 2⁸ = 135213277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135213539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18641 + ... + 24857.

It is an arithmetic number, because the mean of its divisors is an integer number (10446240).

Almost surely, 2^135213533 is an apocalyptic number.

135213533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

135213533 is a deficient number, since it is larger than the sum of its proper divisors (31926307).

135213533 is a wasteful number, since it uses less digits than its factorization.

135213533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6476.

The product of its digits is 4050, while the sum is 26.

The square root of 135213533 is about 11628.1354051284. The cubic root of 135213533 is about 513.2631128531.

The spelling of 135213533 in words is "one hundred thirty-five million, two hundred thirteen thousand, five hundred thirty-three".