1231203130200 has 72 divisors (see below), whose sum is σ = 4134790518300. Its totient is φ = 328320834240.

The previous prime is 1231203130159. The next prime is 1231203130229. The reversal of 1231203130200 is 20313021321.

1231203130200 is a `hidden beast` number, since 1 + 231 + 203 + 1 + 30 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1231203130200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 341999070 + ... + 342002669.

Almost surely, 2^{1231203130200} is an apocalyptic number.

1231203130200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231203130200 is an abundant number, since it is smaller than the sum of its proper divisors (2903587388100).

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

1231203130200 is a wasteful number, since it uses less digits than its factorization.

1231203130200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684001761 (or 684001749 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1231203130200 its reverse (20313021321), we get a palindrome (1251516151521).

The spelling of 1231203130200 in words is "one trillion, two hundred thirty-one billion, two hundred three million, one hundred thirty thousand, two hundred".