238331213 has 2 divisors, whose sum is σ = 238331214. Its totient is φ = 238331212.

The previous prime is 238331189. The next prime is 238331227. The reversal of 238331213 is 312133832.

238331213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233570089 + 4761124 = 15283^2 + 2182^2 .

It is a cyclic number.

It is not a de Polignac number, because 238331213 - 2²⁰ = 237282637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238331293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119165606 + 119165607.

It is an arithmetic number, because the mean of its divisors is an integer number (119165607).

Almost surely, 2^238331213 is an apocalyptic number.

It is an amenable number.

238331213 is a deficient number, since it is larger than the sum of its proper divisors (1).

238331213 is an equidigital number, since it uses as much as digits as its factorization.

238331213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 238331213 is about 15437.9795634014. The cubic root of 238331213 is about 620.0027861477.

The spelling of 238331213 in words is "two hundred thirty-eight million, three hundred thirty-one thousand, two hundred thirteen".