213023011 has 4 divisors (see below), whose sum is σ = 213103800. Its totient is φ = 212942224.

The previous prime is 213022991. The next prime is 213023051. The reversal of 213023011 is 110320312.

213023011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213023011 - 2⁷ = 213022883 is a prime.

It is a super-2 number, since 2×213023011² = 90757606431012242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213022982 and 213023000.

It is not an unprimeable number, because it can be changed into a prime (213023051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36301 + ... + 41758.

It is an arithmetic number, because the mean of its divisors is an integer number (53275950).

Almost surely, 2^213023011 is an apocalyptic number.

213023011 is a deficient number, since it is larger than the sum of its proper divisors (80789).

213023011 is an equidigital number, since it uses as much as digits as its factorization.

213023011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80788.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 213023011 is about 14595.3078419059. The cubic root of 213023011 is about 597.2307672839.

Adding to 213023011 its reverse (110320312), we get a palindrome (323343323).

The spelling of 213023011 in words is "two hundred thirteen million, twenty-three thousand, eleven".