343400849391 has 32 divisors (see below), whose sum is σ = 464358297600. Its totient is φ = 225715666176.

The previous prime is 343400849293. The next prime is 343400849411. The reversal of 343400849391 is 193948004343.

It is a happy number.

It is not a de Polignac number, because 343400849391 - 2²¹ = 343398752239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343400849391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343400849291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49642465 + ... + 49649381.

It is an arithmetic number, because the mean of its divisors is an integer number (14511196800).

Almost surely, 2^343400849391 is an apocalyptic number.

343400849391 is a deficient number, since it is larger than the sum of its proper divisors (120957448209).

343400849391 is a wasteful number, since it uses less digits than its factorization.

343400849391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7863.

The product of its (nonzero) digits is 1119744, while the sum is 48.

The spelling of 343400849391 in words is "three hundred forty-three billion, four hundred million, eight hundred forty-nine thousand, three hundred ninety-one".