343440240420 has 192 divisors, whose sum is σ = 1003627005696. Its totient is φ = 87675955200.

The previous prime is 343440240391. The next prime is 343440240511. The reversal of 343440240420 is 24042044343.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36543162 + ... + 36552558.

It is an arithmetic number, because the mean of its divisors is an integer number (5227223988).

Almost surely, 2^343440240420 is an apocalyptic number.

343440240420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343440240420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501813502848).

343440240420 is an abundant number, since it is smaller than the sum of its proper divisors (660186765276).

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

343440240420 is a wasteful number, since it uses less digits than its factorization.

343440240420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9710 (or 9708 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 343440240420 its reverse (24042044343), we get a palindrome (367482284763).

The spelling of 343440240420 in words is "three hundred forty-three billion, four hundred forty million, two hundred forty thousand, four hundred twenty".