1343505440 has 96 divisors (see below), whose sum is σ = 3362083200. Its totient is φ = 506271744.

The previous prime is 1343505413. The next prime is 1343505467. The reversal of 1343505440 is 445053431.

It is an interprime number because it is at equal distance from previous prime (1343505413) and next prime (1343505467).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243836 + ... + 249284.

It is an arithmetic number, because the mean of its divisors is an integer number (35021700).

Almost surely, 2^1343505440 is an apocalyptic number.

1343505440 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 1343505440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1681041600).

1343505440 is an abundant number, since it is smaller than the sum of its proper divisors (2018577760).

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

1343505440 is a wasteful number, since it uses less digits than its factorization.

1343505440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5554 (or 5546 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1343505440 is about 36653.8598240349. The cubic root of 1343505440 is about 1103.4342914912.

Adding to 1343505440 its reverse (445053431), we get a palindrome (1788558871).

The spelling of 1343505440 in words is "one billion, three hundred forty-three million, five hundred five thousand, four hundred forty".