343421743277 has 2 divisors, whose sum is σ = 343421743278. Its totient is φ = 343421743276.

The previous prime is 343421743253. The next prime is 343421743279. The reversal of 343421743277 is 772347124343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328290037156 + 15131706121 = 572966^2 + 123011^2 .

It is a cyclic number.

It is not a de Polignac number, because 343421743277 - 2²⁴ = 343404966061 is a prime.

Together with 343421743279, 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 (343421743279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171710871638 + 171710871639.

It is an arithmetic number, because the mean of its divisors is an integer number (171710871639).

Almost surely, 2^343421743277 is an apocalyptic number.

It is an amenable number.

343421743277 is a deficient number, since it is larger than the sum of its proper divisors (1).

343421743277 is an equidigital number, since it uses as much as digits as its factorization.

343421743277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816, while the sum is 47.

The spelling of 343421743277 in words is "three hundred forty-three billion, four hundred twenty-one million, seven hundred forty-three thousand, two hundred seventy-seven".