213333331 has 2 divisors, whose sum is σ = 213333332. Its totient is φ = 213333330.

The previous prime is 213333319. The next prime is 213333343. The reversal of 213333331 is 133333312.

It is a balanced prime because it is at equal distance from previous prime (213333319) and next prime (213333343).

It is a cyclic number.

It is not a de Polignac number, because 213333331 - 2⁵ = 213333299 is a prime.

It is a super-2 number, since 2×213333331² = 91022220231111122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213333301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106666665 + 106666666.

It is an arithmetic number, because the mean of its divisors is an integer number (106666666).

Almost surely, 2^213333331 is an apocalyptic number.

213333331 is a deficient number, since it is larger than the sum of its proper divisors (1).

213333331 is an equidigital number, since it uses as much as digits as its factorization.

213333331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458, while the sum is 22.

The square root of 213333331 is about 14605.9347869282. The cubic root of 213333331 is about 597.5206306958.

Adding to 213333331 its reverse (133333312), we get a palindrome (346666643).

It can be divided in two parts, 2 and 13333331, that multiplied together give a palindrome (26666662).

The spelling of 213333331 in words is "two hundred thirteen million, three hundred thirty-three thousand, three hundred thirty-one".