213404430004349 has 2 divisors, whose sum is σ = 213404430004350. Its totient is φ = 213404430004348.

The previous prime is 213404430004313. The next prime is 213404430004351. The reversal of 213404430004349 is 943400034404312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157979308516324 + 55425121488025 = 12568982^2 + 7444805^2 .

It is a cyclic number.

It is not a de Polignac number, because 213404430004349 - 2¹² = 213404430000253 is a prime.

Together with 213404430004351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213404430004309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106702215002174 + 106702215002175.

It is an arithmetic number, because the mean of its divisors is an integer number (106702215002175).

Almost surely, 2^{213404430004349} is an apocalyptic number.

It is an amenable number.

213404430004349 is a deficient number, since it is larger than the sum of its proper divisors (1).

213404430004349 is an equidigital number, since it uses as much as digits as its factorization.

213404430004349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 213404430004349 in words is "two hundred thirteen trillion, four hundred four billion, four hundred thirty million, four thousand, three hundred forty-nine".