203123131021200 has 240 divisors, whose sum is σ = 723326679574016. Its totient is φ = 48386651443200.

The previous prime is 203123131021199. The next prime is 203123131021241. The reversal of 203123131021200 is 2120131321302.

203123131021200 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 209527909 + ... + 210495108.

Almost surely, 2^{203123131021200} is an apocalyptic number.

203123131021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203123131021200 is an abundant number, since it is smaller than the sum of its proper divisors (520203548552816).

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

203123131021200 is a wasteful number, since it uses less digits than its factorization.

203123131021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420023082 (or 420023071 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 203123131021200 its reverse (2120131321302), we get a palindrome (205243262342502).

The spelling of 203123131021200 in words is "two hundred three trillion, one hundred twenty-three billion, one hundred thirty-one million, twenty-one thousand, two hundred".