213332939 has 2 divisors, whose sum is σ = 213332940. Its totient is φ = 213332938.

The previous prime is 213332887. The next prime is 213332993. The reversal of 213332939 is 939233312.

Together with next prime (213332993) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213332939 - 2⁸ = 213332683 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 213332899 and 213332908.

It is not a weakly prime, because it can be changed into another prime (213332239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106666469 + 106666470.

It is an arithmetic number, because the mean of its divisors is an integer number (106666470).

Almost surely, 2^213332939 is an apocalyptic number.

213332939 is a deficient number, since it is larger than the sum of its proper divisors (1).

213332939 is an equidigital number, since it uses as much as digits as its factorization.

213332939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 35.

The square root of 213332939 is about 14605.9213677193. The cubic root of 213332939 is about 597.5202647142.

The spelling of 213332939 in words is "two hundred thirteen million, three hundred thirty-two thousand, nine hundred thirty-nine".