213683839 has 2 divisors, whose sum is σ = 213683840. Its totient is φ = 213683838.

The previous prime is 213683819. The next prime is 213683851. The reversal of 213683839 is 938386312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213683839 - 2⁵ = 213683807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213683795 and 213683804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213683819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106841919 + 106841920.

It is an arithmetic number, because the mean of its divisors is an integer number (106841920).

Almost surely, 2^213683839 is an apocalyptic number.

213683839 is a deficient number, since it is larger than the sum of its proper divisors (1).

213683839 is an equidigital number, since it uses as much as digits as its factorization.

213683839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 213683839 is about 14617.9286836405. The cubic root of 213683839 is about 597.8476950188.

The spelling of 213683839 in words is "two hundred thirteen million, six hundred eighty-three thousand, eight hundred thirty-nine".