1023303440000 has 320 divisors, whose sum is σ = 2725458480360. Its totient is φ = 381222912000.

The previous prime is 1023303439981. The next prime is 1023303440021. The reversal of 1023303440000 is 443033201.

It can be written as a sum of positive squares in 20 ways, for example, as 140109473344 + 883193966656 = 374312^2 + 939784^2 .

It is a tau number, because it is divible by the number of its divisors (320).

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

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 39 ways as a sum of consecutive naturals, for example, 131916122 + ... + 131923878.

Almost surely, 2^{1023303440000} is an apocalyptic number.

1023303440000 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 1023303440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1362729240180).

1023303440000 is an abundant number, since it is smaller than the sum of its proper divisors (1702155040360).

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

1023303440000 is an frugal number, since it uses more digits than its factorization.

1023303440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905 (or 7878 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 1023303440000 its reverse (443033201), we get a palindrome (1023746473201).

The spelling of 1023303440000 in words is "one trillion, twenty-three billion, three hundred three million, four hundred forty thousand".