213333863 has 2 divisors, whose sum is σ = 213333864. Its totient is φ = 213333862.

The previous prime is 213333859. The next prime is 213333899. The reversal of 213333863 is 368333312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213333863 - 2² = 213333859 is a prime.

It is a super-2 number, since 2×213333863² = 91022674205005538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213333163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106666931 + 106666932.

It is an arithmetic number, because the mean of its divisors is an integer number (106666932).

Almost surely, 2^213333863 is an apocalyptic number.

213333863 is a deficient number, since it is larger than the sum of its proper divisors (1).

213333863 is an equidigital number, since it uses as much as digits as its factorization.

213333863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 32.

The square root of 213333863 is about 14605.9529986920. The cubic root of 213333863 is about 597.5211273844.

The spelling of 213333863 in words is "two hundred thirteen million, three hundred thirty-three thousand, eight hundred sixty-three".