213246653 has 4 divisors (see below), whose sum is σ = 215358108. Its totient is φ = 211135200.

The previous prime is 213246641. The next prime is 213246679. The reversal of 213246653 is 356642312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 210772324 + 2474329 = 14518^2 + 1573^2 .

It is a cyclic number.

It is not a de Polignac number, because 213246653 - 2⁴ = 213246637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213246853) 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 in 3 ways as a sum of consecutive naturals, for example, 1055576 + ... + 1055777.

It is an arithmetic number, because the mean of its divisors is an integer number (53839527).

Almost surely, 2^213246653 is an apocalyptic number.

It is an amenable number.

213246653 is a deficient number, since it is larger than the sum of its proper divisors (2111455).

213246653 is a wasteful number, since it uses less digits than its factorization.

213246653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111454.

The product of its digits is 25920, while the sum is 32.

The square root of 213246653 is about 14602.9672669632. The cubic root of 213246653 is about 597.4396948993.

Adding to 213246653 its reverse (356642312), we get a palindrome (569888965).

The spelling of 213246653 in words is "two hundred thirteen million, two hundred forty-six thousand, six hundred fifty-three".