343673433781 has 2 divisors, whose sum is σ = 343673433782. Its totient is φ = 343673433780.

The previous prime is 343673433757. The next prime is 343673433841. The reversal of 343673433781 is 187334376343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200480062500 + 143193371281 = 447750^2 + 378409^2 .

It is an emirp because it is prime and its reverse (187334376343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343673433781 - 2⁹ = 343673433269 is a prime.

It is a super-2 number, since 2×343673433781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343673431781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171836716890 + 171836716891.

It is an arithmetic number, because the mean of its divisors is an integer number (171836716891).

Almost surely, 2^343673433781 is an apocalyptic number.

It is an amenable number.

343673433781 is a deficient number, since it is larger than the sum of its proper divisors (1).

343673433781 is an equidigital number, since it uses as much as digits as its factorization.

343673433781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 52.

The spelling of 343673433781 in words is "three hundred forty-three billion, six hundred seventy-three million, four hundred thirty-three thousand, seven hundred eighty-one".