203020323040 has 48 divisors (see below), whose sum is σ = 504879495120. Its totient is φ = 76934016000.

The previous prime is 203020323029. The next prime is 203020323061. The reversal of 203020323040 is 40323020302.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 203020322999 and 203020323017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33388461 + ... + 33394540.

It is an arithmetic number, because the mean of its divisors is an integer number (10518322815).

Almost surely, 2^203020323040 is an apocalyptic number.

203020323040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203020323040 is an abundant number, since it is smaller than the sum of its proper divisors (301859172080).

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

203020323040 is a wasteful number, since it uses less digits than its factorization.

203020323040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66783035 (or 66783027 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

Adding to 203020323040 its reverse (40323020302), we get a palindrome (243343343342).

The spelling of 203020323040 in words is "two hundred three billion, twenty million, three hundred twenty-three thousand, forty".