213033135 has 24 divisors (see below), whose sum is σ = 396503856. Its totient is φ = 97386240.

The previous prime is 213033131. The next prime is 213033151. The reversal of 213033135 is 531330312.

213033135 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 213033135 - 2² = 213033131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213033131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144186 + ... + 145655.

It is an arithmetic number, because the mean of its divisors is an integer number (16520994).

Almost surely, 2^213033135 is an apocalyptic number.

213033135 is a deficient number, since it is larger than the sum of its proper divisors (183470721).

213033135 is a wasteful number, since it uses less digits than its factorization.

213033135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289863 (or 289856 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 213033135 is about 14595.6546615765. The cubic root of 213033135 is about 597.2402283408.

Adding to 213033135 its reverse (531330312), we get a palindrome (744363447).

The spelling of 213033135 in words is "two hundred thirteen million, thirty-three thousand, one hundred thirty-five".