1231023120200 has 48 divisors (see below), whose sum is σ = 2863804288500. Its totient is φ = 492120984320.

The previous prime is 1231023120181. The next prime is 1231023120247. The reversal of 1231023120200 is 20213201321.

It can be written as a sum of positive squares in 6 ways, for example, as 301970032324 + 929053087876 = 549518^2 + 963874^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1458995 + ... + 2142594.

Almost surely, 2^{1231023120200} is an apocalyptic number.

1231023120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231023120200 is an abundant number, since it is smaller than the sum of its proper divisors (1632781168300).

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

1231023120200 is a wasteful number, since it uses less digits than its factorization.

1231023120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603314 (or 3603305 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1231023120200 its reverse (20213201321), we get a palindrome (1251236321521).

The spelling of 1231023120200 in words is "one trillion, two hundred thirty-one billion, twenty-three million, one hundred twenty thousand, two hundred".