343443240 has 320 divisors, whose sum is σ = 1390435200. Its totient is φ = 74276352.

The previous prime is 343443229. The next prime is 343443251. The reversal of 343443240 is 42344343.

It is an interprime number because it is at equal distance from previous prime (343443229) and next prime (343443251).

It is a super-3 number, since 3×343443240³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 430522 + ... + 431318.

It is an arithmetic number, because the mean of its divisors is an integer number (4345110).

Almost surely, 2^343443240 is an apocalyptic number.

343443240 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 343443240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695217600).

343443240 is an abundant number, since it is smaller than the sum of its proper divisors (1046991960).

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

343443240 is a wasteful number, since it uses less digits than its factorization.

343443240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

The square root of 343443240 is about 18532.2216692980. The cubic root of 343443240 is about 700.3013940218.

Adding to 343443240 its reverse (42344343), we get a palindrome (385787583).

The spelling of 343443240 in words is "three hundred forty-three million, four hundred forty-three thousand, two hundred forty".