343222540 has 48 divisors (see below), whose sum is σ = 747895680. Its totient is φ = 132151040.

The previous prime is 343222519. The next prime is 343222549. The reversal of 343222540 is 45222343.

It is not an unprimeable number, because it can be changed into a prime (343222549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249294 + ... + 250666.

It is an arithmetic number, because the mean of its divisors is an integer number (15581160).

Almost surely, 2^343222540 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 343222540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373947840).

343222540 is an abundant number, since it is smaller than the sum of its proper divisors (404673140).

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

343222540 is a wasteful number, since it uses less digits than its factorization.

343222540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842 (or 1840 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 343222540 is about 18526.2662185342. The cubic root of 343222540 is about 700.1513550265.

Adding to 343222540 its reverse (45222343), we get a palindrome (388444883).

The spelling of 343222540 in words is "three hundred forty-three million, two hundred twenty-two thousand, five hundred forty".