343213133257 has 2 divisors, whose sum is σ = 343213133258. Its totient is φ = 343213133256.

The previous prime is 343213133213. The next prime is 343213133269. The reversal of 343213133257 is 752331312343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179751408841 + 163461724416 = 423971^2 + 404304^2 .

It is a cyclic number.

It is not a de Polignac number, because 343213133257 - 2¹⁹ = 343212608969 is a prime.

It is not a weakly prime, because it can be changed into another prime (343213163257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171606566628 + 171606566629.

It is an arithmetic number, because the mean of its divisors is an integer number (171606566629).

Almost surely, 2^343213133257 is an apocalyptic number.

It is an amenable number.

343213133257 is a deficient number, since it is larger than the sum of its proper divisors (1).

343213133257 is an equidigital number, since it uses as much as digits as its factorization.

343213133257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 37.

The spelling of 343213133257 in words is "three hundred forty-three billion, two hundred thirteen million, one hundred thirty-three thousand, two hundred fifty-seven".