343404020120320 has 72 divisors (see below), whose sum is σ = 822998178891504. Its totient is φ = 137288425623552.

The previous prime is 343404020120243. The next prime is 343404020120321. The reversal of 343404020120320 is 23021020404343.

It is not an unprimeable number, because it can be changed into a prime (343404020120321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69063714 + ... + 73868833.

It is an arithmetic number, because the mean of its divisors is an integer number (11430530262382).

Almost surely, 2^{343404020120320} is an apocalyptic number.

It is an amenable number.

343404020120320 is an abundant number, since it is smaller than the sum of its proper divisors (479594158771184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343404020120320 is a wasteful number, since it uses less digits than its factorization.

343404020120320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142934445 (or 142934431 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 343404020120320 its reverse (23021020404343), we get a palindrome (366425040524663).

The spelling of 343404020120320 in words is "three hundred forty-three trillion, four hundred four billion, twenty million, one hundred twenty thousand, three hundred twenty".