1343031312 has 40 divisors (see below), whose sum is σ = 3965141056. Its totient is φ = 383723136.

The previous prime is 1343031311. The next prime is 1343031323. The reversal of 1343031312 is 2131303431.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1343031311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1998223 + ... + 1998894.

Almost surely, 2^1343031312 is an apocalyptic number.

1343031312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1343031312 is an abundant number, since it is smaller than the sum of its proper divisors (2622109744).

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

1343031312 is a wasteful number, since it uses less digits than its factorization.

1343031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997135 (or 3997129 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1343031312 is about 36647.3916125009. The cubic root of 1343031312 is about 1103.3044742155.

Adding to 1343031312 its reverse (2131303431), we get a palindrome (3474334743).

The spelling of 1343031312 in words is "one billion, three hundred forty-three million, thirty-one thousand, three hundred twelve".