343134240223421 has 2 divisors, whose sum is σ = 343134240223422. Its totient is φ = 343134240223420.

The previous prime is 343134240223417. The next prime is 343134240223531. The reversal of 343134240223421 is 124322042431343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248326823875321 + 94807416348100 = 15758389^2 + 9736910^2 .

It is a cyclic number.

It is not a de Polignac number, because 343134240223421 - 2² = 343134240223417 is a prime.

It is a super-2 number, since 2×343134240223421² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343134240253421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171567120111710 + 171567120111711.

It is an arithmetic number, because the mean of its divisors is an integer number (171567120111711).

Almost surely, 2^{343134240223421} is an apocalyptic number.

It is an amenable number.

343134240223421 is a deficient number, since it is larger than the sum of its proper divisors (1).

343134240223421 is an equidigital number, since it uses as much as digits as its factorization.

343134240223421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 343134240223421 its reverse (124322042431343), we get a palindrome (467456282654764).

The spelling of 343134240223421 in words is "three hundred forty-three trillion, one hundred thirty-four billion, two hundred forty million, two hundred twenty-three thousand, four hundred twenty-one".