213143632453 has 4 divisors (see below), whose sum is σ = 213406449088. Its totient is φ = 212880815820.

The previous prime is 213143632439. The next prime is 213143632477. The reversal of 213143632453 is 354236341312.

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 a de Polignac number, because none of the positive numbers 2^k-213143632453 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 (213143632433) 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, 131407101 + ... + 131408722.

It is an arithmetic number, because the mean of its divisors is an integer number (53351612272).

Almost surely, 2^213143632453 is an apocalyptic number.

It is an amenable number.

213143632453 is a deficient number, since it is larger than the sum of its proper divisors (262816635).

213143632453 is an equidigital number, since it uses as much as digits as its factorization.

213143632453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262816634.

The product of its digits is 155520, while the sum is 37.

Adding to 213143632453 its reverse (354236341312), we get a palindrome (567379973765).

The spelling of 213143632453 in words is "two hundred thirteen billion, one hundred forty-three million, six hundred thirty-two thousand, four hundred fifty-three".