1231000330000 has 100 divisors (see below), whose sum is σ = 3406142935360. Its totient is φ = 422057232000.

The previous prime is 1231000329961. The next prime is 1231000330003. The reversal of 1231000330000 is 330001321.

It is a tau number, because it is divible by the number of its divisors (100).

It is not an unprimeable number, because it can be changed into a prime (1231000330003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8722860 + ... + 8862859.

Almost surely, 2^{1231000330000} is an apocalyptic number.

1231000330000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231000330000 is an abundant number, since it is smaller than the sum of its proper divisors (2175142605360).

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

1231000330000 is an equidigital number, since it uses as much as digits as its factorization.

1231000330000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17585754 (or 17585733 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 1231000330000 its reverse (330001321), we get a palindrome (1231330331321).

The spelling of 1231000330000 in words is "one trillion, two hundred thirty-one billion, three hundred thirty thousand".