213286939 has 2 divisors, whose sum is σ = 213286940. Its totient is φ = 213286938.

The previous prime is 213286921. The next prime is 213286991. The reversal of 213286939 is 939682312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213286939 - 2⁹ = 213286427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213286895 and 213286904.

It is not a weakly prime, because it can be changed into another prime (213286919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106643469 + 106643470.

It is an arithmetic number, because the mean of its divisors is an integer number (106643470).

Almost surely, 2^213286939 is an apocalyptic number.

213286939 is a deficient number, since it is larger than the sum of its proper divisors (1).

213286939 is an equidigital number, since it uses as much as digits as its factorization.

213286939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 213286939 is about 14604.3465790154. The cubic root of 213286939 is about 597.4773147786.

The spelling of 213286939 in words is "two hundred thirteen million, two hundred eighty-six thousand, nine hundred thirty-nine".