343921254409 has 2 divisors, whose sum is σ = 343921254410. Its totient is φ = 343921254408.

The previous prime is 343921254389. The next prime is 343921254461. The reversal of 343921254409 is 904452129343.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303380640000 + 40540614409 = 550800^2 + 201347^2 .

It is a cyclic number.

It is not a de Polignac number, because 343921254409 - 2³⁵ = 309561516041 is a prime.

It is not a weakly prime, because it can be changed into another prime (343921254109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171960627204 + 171960627205.

It is an arithmetic number, because the mean of its divisors is an integer number (171960627205).

Almost surely, 2^343921254409 is an apocalyptic number.

It is an amenable number.

343921254409 is a deficient number, since it is larger than the sum of its proper divisors (1).

343921254409 is an equidigital number, since it uses as much as digits as its factorization.

343921254409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 343921254409 in words is "three hundred forty-three billion, nine hundred twenty-one million, two hundred fifty-four thousand, four hundred nine".