203401023 has 48 divisors (see below), whose sum is σ = 334114560.
Its totient is φ = 107516160.
The previous prime is 203401021. The next prime is 203401027. The reversal of 203401023 is 320104302.
It is not a de Polignac number, because 203401023 - 21 = 203401021 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 203400993 and 203401011.
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 47 ways as a sum of consecutive naturals, for example, 1484611 + ... + 1484747.
It is an arithmetic number, because the mean of its divisors is an integer number (6960720).
Almost surely, 2203401023 is an apocalyptic number.
203401023 is a deficient number, since it is larger than the sum of its proper divisors (130713537).
203401023 is a wasteful number, since it uses less digits than its factorization.
203401023 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 288 (or 227 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 15.
The square root of 203401023 is about 14261.8730537051.
The cubic root of 203401023 is about 588.0998170356.
Adding to 203401023 its reverse (320104302), we get a palindrome (523505325).
It can be divided in two parts, 20 and 3401023, that added together give a palindrome (3401043).
The spelling of 203401023 in words is "two hundred three million, four hundred one thousand, twenty-three".