213133011 has 16 divisors (see below), whose sum is σ = 349757184. Its totient is φ = 112421664.

The previous prime is 213133007. The next prime is 213133031. The reversal of 213133011 is 110331312.

213133011 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 213133011 - 2² = 213133007 is a prime.

It is a super-2 number, since 2×213133011² = 90851360755852242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213133031) 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, 390081 + ... + 390626.

It is an arithmetic number, because the mean of its divisors is an integer number (21859824).

Almost surely, 2^213133011 is an apocalyptic number.

213133011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213133011 is a deficient number, since it is larger than the sum of its proper divisors (136624173).

213133011 is a wasteful number, since it uses less digits than its factorization.

213133011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780730.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 213133011 is about 14599.0756899196. The cubic root of 213133011 is about 597.3335481673. Note that the first 3 decimals are identical.

Adding to 213133011 its reverse (110331312), we get a palindrome (323464323).

The spelling of 213133011 in words is "two hundred thirteen million, one hundred thirty-three thousand, eleven".