1311068400 has 120 divisors (see below), whose sum is σ = 4420907520. Its totient is φ = 331211520.

The previous prime is 1311068387. The next prime is 1311068401. The reversal of 1311068400 is 48601131.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311068401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5952 + ... + 51551.

It is an arithmetic number, because the mean of its divisors is an integer number (36840896).

Almost surely, 2^1311068400 is an apocalyptic number.

1311068400 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 1311068400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2210453760).

1311068400 is an abundant number, since it is smaller than the sum of its proper divisors (3109839120).

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

1311068400 is a wasteful number, since it uses less digits than its factorization.

1311068400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57543 (or 57532 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1311068400 is about 36208.6785177256. The cubic root of 1311068400 is about 1094.4815627159.

Adding to 1311068400 its reverse (48601131), we get a palindrome (1359669531).

The spelling of 1311068400 in words is "one billion, three hundred eleven million, sixty-eight thousand, four hundred".