1340334340 has 12 divisors (see below), whose sum is σ = 2814702156. Its totient is φ = 536133728.

The previous prime is 1340334319. The next prime is 1340334343. The reversal of 1340334340 is 434330431.

It can be written as a sum of positive squares in 2 ways, for example, as 818303236 + 522031104 = 28606^2 + 22848^2 .

It is a super-2 number, since 2×1340334340² = 3592992285966471200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1340334343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33508339 + ... + 33508378.

It is an arithmetic number, because the mean of its divisors is an integer number (234558513).

Almost surely, 2^1340334340 is an apocalyptic number.

1340334340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340334340 is an abundant number, since it is smaller than the sum of its proper divisors (1474367816).

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

1340334340 is a wasteful number, since it uses less digits than its factorization.

1340334340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67016726 (or 67016724 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 1340334340 is about 36610.5768870145. The cubic root of 1340334340 is about 1102.5654556360.

Adding to 1340334340 its reverse (434330431), we get a palindrome (1774664771).

The spelling of 1340334340 in words is "one billion, three hundred forty million, three hundred thirty-four thousand, three hundred forty".