213331510453 has 4 divisors (see below), whose sum is σ = 213349505248. Its totient is φ = 213313515660.

The previous prime is 213331510451. The next prime is 213331510481. The reversal of 213331510453 is 354015133312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213331510453 - 2¹ = 213331510451 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 (213331510451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8979603 + ... + 9003328.

It is an arithmetic number, because the mean of its divisors is an integer number (53337376312).

Almost surely, 2^213331510453 is an apocalyptic number.

It is an amenable number.

213331510453 is a deficient number, since it is larger than the sum of its proper divisors (17994795).

213331510453 is a wasteful number, since it uses less digits than its factorization.

213331510453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17994794.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 213331510453 its reverse (354015133312), we get a palindrome (567346643765).

The spelling of 213331510453 in words is "two hundred thirteen billion, three hundred thirty-one million, five hundred ten thousand, four hundred fifty-three".