204103231 has 4 divisors (see below), whose sum is σ = 204755632. Its totient is φ = 203450832.

The previous prime is 204103217. The next prime is 204103253. The reversal of 204103231 is 132301402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132301402 = 2 ⋅66150701.

It is a cyclic number.

It is not a de Polignac number, because 204103231 - 2¹³ = 204095039 is a prime.

It is a super-2 number, since 2×204103231² = 83316257809278722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204103201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325731 + ... + 326356.

It is an arithmetic number, because the mean of its divisors is an integer number (51188908).

Almost surely, 2^204103231 is an apocalyptic number.

204103231 is a deficient number, since it is larger than the sum of its proper divisors (652401).

204103231 is an equidigital number, since it uses as much as digits as its factorization.

204103231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652400.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 204103231 is about 14286.4702078575. The cubic root of 204103231 is about 588.7758117854.

Adding to 204103231 its reverse (132301402), we get a palindrome (336404633).

The spelling of 204103231 in words is "two hundred four million, one hundred three thousand, two hundred thirty-one".