213065453 has 4 divisors (see below), whose sum is σ = 213096828. Its totient is φ = 213034080.

The previous prime is 213065443. The next prime is 213065467. The reversal of 213065453 is 354560312.

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 4609609 + 208455844 = 2147^2 + 14438^2 .

It is a cyclic number.

It is not a de Polignac number, because 213065453 - 2⁸ = 213065197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213065443) 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, 776 + ... + 20657.

It is an arithmetic number, because the mean of its divisors is an integer number (53274207).

Almost surely, 2^213065453 is an apocalyptic number.

It is an amenable number.

213065453 is a deficient number, since it is larger than the sum of its proper divisors (31375).

213065453 is an equidigital number, since it uses as much as digits as its factorization.

213065453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31374.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 213065453 is about 14596.7617299180. The cubic root of 213065453 is about 597.2704280775.

The spelling of 213065453 in words is "two hundred thirteen million, sixty-five thousand, four hundred fifty-three".