343421047 has 2 divisors, whose sum is σ = 343421048. Its totient is φ = 343421046.

The previous prime is 343420997. The next prime is 343421053. The reversal of 343421047 is 740124343.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 343421047 - 2¹⁹ = 342896759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343421147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171710523 + 171710524.

It is an arithmetic number, because the mean of its divisors is an integer number (171710524).

Almost surely, 2^343421047 is an apocalyptic number.

343421047 is a deficient number, since it is larger than the sum of its proper divisors (1).

343421047 is an equidigital number, since it uses as much as digits as its factorization.

343421047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 343421047 is about 18531.6228916952. The cubic root of 343421047 is about 700.2863094102.

The spelling of 343421047 in words is "three hundred forty-three million, four hundred twenty-one thousand, forty-seven".