343423040 has 56 divisors (see below), whose sum is σ = 833247000. Its totient is φ = 134770688.

The previous prime is 343423021. The next prime is 343423049. The reversal of 343423040 is 40324343.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36192256 + 307230784 = 6016^2 + 17528^2 .

It is a junction number, because it is equal to n+sod(n) for n = 343422997 and 343423015.

It is not an unprimeable number, because it can be changed into a prime (343423049) 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, 6836 + ... + 27084.

Almost surely, 2^343423040 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 343423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416623500).

343423040 is an abundant number, since it is smaller than the sum of its proper divisors (489823960).

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

343423040 is a wasteful number, since it uses less digits than its factorization.

343423040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20319 (or 20309 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 343423040 is about 18531.6766645655. The cubic root of 343423040 is about 700.2876640816.

Adding to 343423040 its reverse (40324343), we get a palindrome (383747383).

The spelling of 343423040 in words is "three hundred forty-three million, four hundred twenty-three thousand, forty".