213013433 has 2 divisors, whose sum is σ = 213013434. Its totient is φ = 213013432.

The previous prime is 213013429. The next prime is 213013459. The reversal of 213013433 is 334310312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209583529 + 3429904 = 14477^2 + 1852^2 .

It is a cyclic number.

It is not a de Polignac number, because 213013433 - 2² = 213013429 is a prime.

It is not a weakly prime, because it can be changed into another prime (213013483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106506716 + 106506717.

It is an arithmetic number, because the mean of its divisors is an integer number (106506717).

Almost surely, 2^213013433 is an apocalyptic number.

It is an amenable number.

213013433 is a deficient number, since it is larger than the sum of its proper divisors (1).

213013433 is an equidigital number, since it uses as much as digits as its factorization.

213013433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 213013433 is about 14594.9797190678. The cubic root of 213013433 is about 597.2218161976.

Adding to 213013433 its reverse (334310312), we get a palindrome (547323745).

The spelling of 213013433 in words is "two hundred thirteen million, thirteen thousand, four hundred thirty-three".