1313243300 has 36 divisors (see below), whose sum is σ = 2851366980. Its totient is φ = 524997120.

The previous prime is 1313243293. The next prime is 1313243303. The reversal of 1313243300 is 33423131.

It can be written as a sum of positive squares in 6 ways, for example, as 484264036 + 828979264 = 22006^2 + 28792^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1313243303) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 275336 + ... + 280064.

Almost surely, 2^1313243300 is an apocalyptic number.

1313243300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313243300 is an abundant number, since it is smaller than the sum of its proper divisors (1538123680).

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

1313243300 is a wasteful number, since it uses less digits than its factorization.

1313243300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7520 (or 7513 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1313243300 is about 36238.6989280796. The cubic root of 1313243300 is about 1095.0864314642.

Adding to 1313243300 its reverse (33423131), we get a palindrome (1346666431).

The spelling of 1313243300 in words is "one billion, three hundred thirteen million, two hundred forty-three thousand, three hundred".