213240283 has 2 divisors, whose sum is σ = 213240284. Its totient is φ = 213240282.

The previous prime is 213240281. The next prime is 213240329. The reversal of 213240283 is 382042312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213240283 - 2¹ = 213240281 is a prime.

Together with 213240281, it forms a pair of twin primes.

It is equal to p_11770531 and since 213240283 and 11770531 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (213240281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106620141 + 106620142.

It is an arithmetic number, because the mean of its divisors is an integer number (106620142).

Almost surely, 2^213240283 is an apocalyptic number.

213240283 is a deficient number, since it is larger than the sum of its proper divisors (1).

213240283 is an equidigital number, since it uses as much as digits as its factorization.

213240283 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 213240283 is about 14602.7491589769. The cubic root of 213240283 is about 597.4337460310.

Adding to 213240283 its reverse (382042312), we get a palindrome (595282595).

The spelling of 213240283 in words is "two hundred thirteen million, two hundred forty thousand, two hundred eighty-three".