203123223200 has 36 divisors (see below), whose sum is σ = 495874570590. Its totient is φ = 81249288960.

The previous prime is 203123223197. The next prime is 203123223253. The reversal of 203123223200 is 2322321302.

It can be written as a sum of positive squares in 3 ways, for example, as 197622924304 + 5500298896 = 444548^2 + 74164^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126951215 + ... + 126952814.

Almost surely, 2^203123223200 is an apocalyptic number.

203123223200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203123223200 is an abundant number, since it is smaller than the sum of its proper divisors (292751347390).

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

203123223200 is a wasteful number, since it uses less digits than its factorization.

203123223200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253904049 (or 253904036 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 203123223200 its reverse (2322321302), we get a palindrome (205445544502).

The spelling of 203123223200 in words is "two hundred three billion, one hundred twenty-three million, two hundred twenty-three thousand, two hundred".