204223431 has 16 divisors (see below), whose sum is σ = 290875104. Its totient is φ = 127002624.

The previous prime is 204223429. The next prime is 204223433. The reversal of 204223431 is 134322402.

204223431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204223429) and next prime (204223433).

It is not a de Polignac number, because 204223431 - 2¹ = 204223429 is a prime.

It is a super-2 number, since 2×204223431² = 83414419538823522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204223398 and 204223407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204223433) 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, 11956 + ... + 23481.

It is an arithmetic number, because the mean of its divisors is an integer number (18179694).

Almost surely, 2^204223431 is an apocalyptic number.

204223431 is a deficient number, since it is larger than the sum of its proper divisors (86651673).

204223431 is a wasteful number, since it uses less digits than its factorization.

204223431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35570.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 204223431 is about 14290.6763660787. The cubic root of 204223431 is about 588.8913692642.

Adding to 204223431 its reverse (134322402), we get a palindrome (338545833).

The spelling of 204223431 in words is "two hundred four million, two hundred twenty-three thousand, four hundred thirty-one".