213345453 has 8 divisors (see below), whose sum is σ = 284751616. Its totient is φ = 142084800.

The previous prime is 213345449. The next prime is 213345479. The reversal of 213345453 is 354543312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213345453 - 2² = 213345449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213345453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213345653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32908 + ... + 38853.

It is an arithmetic number, because the mean of its divisors is an integer number (35593952).

Almost surely, 2^213345453 is an apocalyptic number.

It is an amenable number.

213345453 is a deficient number, since it is larger than the sum of its proper divisors (71406163).

213345453 is an equidigital number, since it uses as much as digits as its factorization.

213345453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72755.

The product of its digits is 21600, while the sum is 30.

The square root of 213345453 is about 14606.3497493385. The cubic root of 213345453 is about 597.5319478958.

Adding to 213345453 its reverse (354543312), we get a palindrome (567888765).

It can be divided in two parts, 2133 and 45453, that added together give a triangular number (47586 = T₃₀₈).

The spelling of 213345453 in words is "two hundred thirteen million, three hundred forty-five thousand, four hundred fifty-three".