1311232340000 has 240 divisors, whose sum is σ = 3561533569440. Its totient is φ = 471060480000.

The previous prime is 1311232339981. The next prime is 1311232340129. The reversal of 1311232340000 is 432321131.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18224096 + ... + 18295904.

It is an arithmetic number, because the mean of its divisors is an integer number (14839723206).

Almost surely, 2^{1311232340000} is an apocalyptic number.

1311232340000 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 1311232340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1780766784720).

1311232340000 is an abundant number, since it is smaller than the sum of its proper divisors (2250301229440).

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

1311232340000 is an equidigital number, since it uses as much as digits as its factorization.

1311232340000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71933 (or 71910 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1311232340000 its reverse (432321131), we get a palindrome (1311664661131).

The spelling of 1311232340000 in words is "one trillion, three hundred eleven billion, two hundred thirty-two million, three hundred forty thousand".