1320343100 has 18 divisors (see below), whose sum is σ = 2865144744. Its totient is φ = 528137200.

The previous prime is 1320343067. The next prime is 1320343111. The reversal of 1320343100 is 13430231.

It is a happy number.

It is a super-2 number, since 2×1320343100² = 3486611803435220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6601616 + ... + 6601815.

It is an arithmetic number, because the mean of its divisors is an integer number (159174708).

Almost surely, 2^1320343100 is an apocalyptic number.

1320343100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320343100 is an abundant number, since it is smaller than the sum of its proper divisors (1544801644).

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

1320343100 is a wasteful number, since it uses less digits than its factorization.

1320343100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13203445 (or 13203438 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1320343100 is about 36336.5257007326. The cubic root of 1320343100 is about 1097.0563445323.

Adding to 1320343100 its reverse (13430231), we get a palindrome (1333773331).

The spelling of 1320343100 in words is "one billion, three hundred twenty million, three hundred forty-three thousand, one hundred".