213331011 has 32 divisors (see below), whose sum is σ = 312035328. Its totient is φ = 129093120.

The previous prime is 213331007. The next prime is 213331037. The reversal of 213331011 is 110133312.

213331011 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 213331011 - 2² = 213331007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213331051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246766 + ... + 247628.

It is an arithmetic number, because the mean of its divisors is an integer number (9751104).

Almost surely, 2^213331011 is an apocalyptic number.

213331011 is a deficient number, since it is larger than the sum of its proper divisors (98704317).

213331011 is a wasteful number, since it uses less digits than its factorization.

213331011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051.

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

The square root of 213331011 is about 14605.8553669410. The cubic root of 213331011 is about 597.5184646757.

Adding to 213331011 its reverse (110133312), we get a palindrome (323464323).

The spelling of 213331011 in words is "two hundred thirteen million, three hundred thirty-one thousand, eleven".