203102020 has 48 divisors (see below), whose sum is σ = 489787200. Its totient is φ = 69966720.

The previous prime is 203101999. The next prime is 203102021. The reversal of 203102020 is 20201302.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 203101988 and 203102006.

It is not an unprimeable number, because it can be changed into a prime (203102021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20115 + ... + 28474.

It is an arithmetic number, because the mean of its divisors is an integer number (10203900).

Almost surely, 2^203102020 is an apocalyptic number.

203102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203102020 is an abundant number, since it is smaller than the sum of its proper divisors (286685180).

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

203102020 is a wasteful number, since it uses less digits than its factorization.

203102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48628 (or 48626 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 203102020 is about 14251.3865992050. The cubic root of 203102020 is about 587.8115034342.

Adding to 203102020 its reverse (20201302), we get a palindrome (223303322).

The spelling of 203102020 in words is "two hundred three million, one hundred two thousand, twenty".