239307213 has 16 divisors (see below), whose sum is σ = 326618240. Its totient is φ = 155824992.

The previous prime is 239307191. The next prime is 239307247. The reversal of 239307213 is 312703932.

239307213 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 239307213 - 2¹² = 239303117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239307253) 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, 2323320 + ... + 2323422.

It is an arithmetic number, because the mean of its divisors is an integer number (20413640).

Almost surely, 2^239307213 is an apocalyptic number.

It is an amenable number.

239307213 is a deficient number, since it is larger than the sum of its proper divisors (87311027).

239307213 is an frugal number, since it uses more digits than its factorization.

239307213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 239307213 is about 15469.5576213413. The cubic root of 239307213 is about 620.8479664954.

The spelling of 239307213 in words is "two hundred thirty-nine million, three hundred seven thousand, two hundred thirteen".