1343240340 has 192 divisors, whose sum is σ = 4292870400. Its totient is φ = 311095296.

The previous prime is 1343240303. The next prime is 1343240351. The reversal of 1343240340 is 430423431.

It is a super-2 number, since 2×1343240340² = 3608589222006631200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1343240340.

It is a congruent number.

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, 3452866 + ... + 3453254.

It is an arithmetic number, because the mean of its divisors is an integer number (22358700).

Almost surely, 2^1343240340 is an apocalyptic number.

1343240340 is a gapful number since it is divisible by the number (10) 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 1343240340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2146435200).

1343240340 is an abundant number, since it is smaller than the sum of its proper divisors (2949630060).

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

1343240340 is a wasteful number, since it uses less digits than its factorization.

1343240340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 1343240340 is about 36650.2433825480. The cubic root of 1343240340 is about 1103.3617103007.

Adding to 1343240340 its reverse (430423431), we get a palindrome (1773663771).

The spelling of 1343240340 in words is "one billion, three hundred forty-three million, two hundred forty thousand, three hundred forty".