213404440143173 has 2 divisors, whose sum is σ = 213404440143174. Its totient is φ = 213404440143172.

The previous prime is 213404440143119. The next prime is 213404440143227. The reversal of 213404440143173 is 371341044404312.

It is a balanced prime because it is at equal distance from previous prime (213404440143119) and next prime (213404440143227).

It can be written as a sum of positive squares in only one way, i.e., 212853130923169 + 551309220004 = 14589487^2 + 742502^2 .

It is a cyclic number.

It is not a de Polignac number, because 213404440143173 - 2²⁰ = 213404439094597 is a prime.

It is a super-2 number, since 2×213404440143173² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213404440143173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213404440133173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106702220071586 + 106702220071587.

It is an arithmetic number, because the mean of its divisors is an integer number (106702220071587).

Almost surely, 2^{213404440143173} is an apocalyptic number.

It is an amenable number.

213404440143173 is a deficient number, since it is larger than the sum of its proper divisors (1).

213404440143173 is an equidigital number, since it uses as much as digits as its factorization.

213404440143173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 41.

Adding to 213404440143173 its reverse (371341044404312), we get a palindrome (584745484547485).

The spelling of 213404440143173 in words is "two hundred thirteen trillion, four hundred four billion, four hundred forty million, one hundred forty-three thousand, one hundred seventy-three".