343921254389 has 2 divisors, whose sum is σ = 343921254390. Its totient is φ = 343921254388.

The previous prime is 343921254379. The next prime is 343921254409. The reversal of 343921254389 is 983452129343.

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., 338136435025 + 5784819364 = 581495^2 + 76058^2 .

It is a cyclic number.

It is not a de Polignac number, because 343921254389 - 2⁸ = 343921254133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343921254389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343921254329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171960627194 + 171960627195.

It is an arithmetic number, because the mean of its divisors is an integer number (171960627195).

Almost surely, 2^343921254389 is an apocalyptic number.

It is an amenable number.

343921254389 is a deficient number, since it is larger than the sum of its proper divisors (1).

343921254389 is an equidigital number, since it uses as much as digits as its factorization.

343921254389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 53.

The spelling of 343921254389 in words is "three hundred forty-three billion, nine hundred twenty-one million, two hundred fifty-four thousand, three hundred eighty-nine".