213143632477 has 2 divisors, whose sum is σ = 213143632478. Its totient is φ = 213143632476.

The previous prime is 213143632439. The next prime is 213143632483. The reversal of 213143632477 is 774236341312.

It is a happy number.

213143632477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162110111641 + 51033520836 = 402629^2 + 225906^2 .

It is a cyclic number.

It is not a de Polignac number, because 213143632477 - 2²⁷ = 213009414749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213143632487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106571816238 + 106571816239.

It is an arithmetic number, because the mean of its divisors is an integer number (106571816239).

Almost surely, 2^213143632477 is an apocalyptic number.

It is an amenable number.

213143632477 is a deficient number, since it is larger than the sum of its proper divisors (1).

213143632477 is an equidigital number, since it uses as much as digits as its factorization.

213143632477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 43.

Adding to 213143632477 its reverse (774236341312), we get a palindrome (987379973789).

The spelling of 213143632477 in words is "two hundred thirteen billion, one hundred forty-three million, six hundred thirty-two thousand, four hundred seventy-seven".