343240040 has 128 divisors (see below), whose sum is σ = 947116800. Its totient is φ = 110161920.

The previous prime is 343239973. The next prime is 343240097. The reversal of 343240040 is 40042343.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 343239994 and 343240021.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130256 + ... + 132864.

It is an arithmetic number, because the mean of its divisors is an integer number (7399350).

Almost surely, 2^343240040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343240040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (473558400).

343240040 is an abundant number, since it is smaller than the sum of its proper divisors (603876760).

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

343240040 is a wasteful number, since it uses less digits than its factorization.

343240040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667 (or 2663 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 343240040 is about 18526.7385149141. The cubic root of 343240040 is about 700.1632544397.

Adding to 343240040 its reverse (40042343), we get a palindrome (383282383).

The spelling of 343240040 in words is "three hundred forty-three million, two hundred forty thousand, forty".