203023229985 has 24 divisors (see below), whose sum is σ = 352746838080. Its totient is φ = 108020623392.

The previous prime is 203023229971. The next prime is 203023229987. The reversal of 203023229985 is 589922320302.

203023229985 is a `hidden beast` number, since 20 + 30 + 232 + 299 + 85 = 666.

It is not a de Polignac number, because 203023229985 - 2⁵ = 203023229953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 203023229985.

It is not an unprimeable number, because it can be changed into a prime (203023229987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5364949 + ... + 5402658.

It is an arithmetic number, because the mean of its divisors is an integer number (14697784920).

Almost surely, 2^203023229985 is an apocalyptic number.

It is an amenable number.

203023229985 is a deficient number, since it is larger than the sum of its proper divisors (149723608095).

203023229985 is a wasteful number, since it uses less digits than its factorization.

203023229985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10768037 (or 10768034 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 203023229985 in words is "two hundred three billion, twenty-three million, two hundred twenty-nine thousand, nine hundred eighty-five".