213343144300553 has 2 divisors, whose sum is σ = 213343144300554. Its totient is φ = 213343144300552.

The previous prime is 213343144300543. The next prime is 213343144300711. The reversal of 213343144300553 is 355003441343312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123960433597504 + 89382710703049 = 11133752^2 + 9454243^2 .

It is a cyclic number.

It is not a de Polignac number, because 213343144300553 - 2³² = 213338849333257 is a prime.

It is a super-2 number, since 2×213343144300553² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 213343144300553.

It is not a weakly prime, because it can be changed into another prime (213343144300543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106671572150276 + 106671572150277.

It is an arithmetic number, because the mean of its divisors is an integer number (106671572150277).

Almost surely, 2^{213343144300553} is an apocalyptic number.

It is an amenable number.

213343144300553 is a deficient number, since it is larger than the sum of its proper divisors (1).

213343144300553 is an equidigital number, since it uses as much as digits as its factorization.

213343144300553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 41.

Adding to 213343144300553 its reverse (355003441343312), we get a palindrome (568346585643865).

The spelling of 213343144300553 in words is "two hundred thirteen trillion, three hundred forty-three billion, one hundred forty-four million, three hundred thousand, five hundred fifty-three".