213303533 has 2 divisors, whose sum is σ = 213303534. Its totient is φ = 213303532.

The previous prime is 213303527. The next prime is 213303569. The reversal of 213303533 is 335303312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125731369 + 87572164 = 11213^2 + 9358^2 .

It is a cyclic number.

It is not a de Polignac number, because 213303533 - 2⁶ = 213303469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213303499 and 213303508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213308533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106651766 + 106651767.

It is an arithmetic number, because the mean of its divisors is an integer number (106651767).

Almost surely, 2^213303533 is an apocalyptic number.

It is an amenable number.

213303533 is a deficient number, since it is larger than the sum of its proper divisors (1).

213303533 is an equidigital number, since it uses as much as digits as its factorization.

213303533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 23.

The square root of 213303533 is about 14604.9146865019. The cubic root of 213303533 is about 597.4928092130.

Adding to 213303533 its reverse (335303312), we get a palindrome (548606845).

The spelling of 213303533 in words is "two hundred thirteen million, three hundred three thousand, five hundred thirty-three".