1343021340 has 48 divisors (see below), whose sum is σ = 3805780608. Its totient is φ = 353822784.

The previous prime is 1343021311. The next prime is 1343021353. The reversal of 1343021340 is 431203431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129862 + ... + 139821.

It is an arithmetic number, because the mean of its divisors is an integer number (79287096).

Almost surely, 2^1343021340 is an apocalyptic number.

1343021340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1343021340 is an abundant number, since it is smaller than the sum of its proper divisors (2462759268).

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

1343021340 is a wasteful number, since it uses less digits than its factorization.

1343021340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269778 (or 269776 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1343021340 is about 36647.2555589092. The cubic root of 1343021340 is about 1103.3017435322.

Adding to 1343021340 its reverse (431203431), we get a palindrome (1774224771).

The spelling of 1343021340 in words is "one billion, three hundred forty-three million, twenty-one thousand, three hundred forty".