213312239 has 6 divisors (see below), whose sum is σ = 248138784. Its totient is φ = 182839020.

The previous prime is 213312223. The next prime is 213312251. The reversal of 213312239 is 932213312.

It is not a de Polignac number, because 213312239 - 2⁴ = 213312223 is a prime.

It is a super-2 number, since 2×213312239² = 91004222614386242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213312839) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2176607 + ... + 2176704.

It is an arithmetic number, because the mean of its divisors is an integer number (41356464).

Almost surely, 2^213312239 is an apocalyptic number.

213312239 is a deficient number, since it is larger than the sum of its proper divisors (34826545).

213312239 is an equidigital number, since it uses as much as digits as its factorization.

213312239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4353325 (or 4353318 counting only the distinct ones).

The product of its digits is 1944, while the sum is 26.

The square root of 213312239 is about 14605.2127338153. The cubic root of 213312239 is about 597.5009380073.

The spelling of 213312239 in words is "two hundred thirteen million, three hundred twelve thousand, two hundred thirty-nine".