1231020303200 has 72 divisors (see below), whose sum is σ = 3038995101240. Its totient is φ = 486875417600.

The previous prime is 1231020303199. The next prime is 1231020303209. The reversal of 1231020303200 is 23030201321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231020303209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8573606 + ... + 8716005.

It is an arithmetic number, because the mean of its divisors is an integer number (42208265295).

Almost surely, 2^{1231020303200} is an apocalyptic number.

1231020303200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231020303200 is an abundant number, since it is smaller than the sum of its proper divisors (1807974798040).

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

1231020303200 is a wasteful number, since it uses less digits than its factorization.

1231020303200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17289720 (or 17289707 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 1231020303200 its reverse (23030201321), we get a palindrome (1254050504521).

The spelling of 1231020303200 in words is "one trillion, two hundred thirty-one billion, twenty million, three hundred three thousand, two hundred".