213043331 has 8 divisors (see below), whose sum is σ = 215530224. Its totient is φ = 210562560.

The previous prime is 213043289. The next prime is 213043351. The reversal of 213043331 is 133340312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213043331 - 2²² = 208849027 is a prime.

It is a super-2 number, since 2×213043331² = 90774921767151122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213043351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142916 + ... + 144398.

It is an arithmetic number, because the mean of its divisors is an integer number (26941278).

Almost surely, 2^213043331 is an apocalyptic number.

213043331 is a deficient number, since it is larger than the sum of its proper divisors (2486893).

213043331 is a wasteful number, since it uses less digits than its factorization.

213043331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 213043331 is about 14596.0039394349. The cubic root of 213043331 is about 597.2497563801.

Adding to 213043331 its reverse (133340312), we get a palindrome (346383643).

The spelling of 213043331 in words is "two hundred thirteen million, forty-three thousand, three hundred thirty-one".