203401020 has 24 divisors (see below), whose sum is σ = 569523024. Its totient is φ = 54240256.

The previous prime is 203400997. The next prime is 203401021. The reversal of 203401020 is 20104302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 203400987 and 203401005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203401021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694949 + ... + 1695068.

It is an arithmetic number, because the mean of its divisors is an integer number (23730126).

Almost surely, 2^203401020 is an apocalyptic number.

203401020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203401020 is an abundant number, since it is smaller than the sum of its proper divisors (366122004).

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

203401020 is a wasteful number, since it uses less digits than its factorization.

203401020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390029 (or 3390027 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 203401020 is about 14261.8729485296. The cubic root of 203401020 is about 588.0998141443.

Adding to 203401020 its reverse (20104302), we get a palindrome (223505322).

The spelling of 203401020 in words is "two hundred three million, four hundred one thousand, twenty".