204013431 has 16 divisors (see below), whose sum is σ = 318150400. Its totient is φ = 128850264.

The previous prime is 204013423. The next prime is 204013441. The reversal of 204013431 is 134310402.

It is not a de Polignac number, because 204013431 - 2³ = 204013423 is a prime.

It is a super-2 number, since 2×204013431² = 83242960056783522, 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 (204013421) 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, 198331 + ... + 199356.

It is an arithmetic number, because the mean of its divisors is an integer number (19884400).

Almost surely, 2^204013431 is an apocalyptic number.

204013431 is a deficient number, since it is larger than the sum of its proper divisors (114136969).

204013431 is a wasteful number, since it uses less digits than its factorization.

204013431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397715 (or 397709 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 204013431 is about 14283.3270283922. The cubic root of 204013431 is about 588.6894505462.

Adding to 204013431 its reverse (134310402), we get a palindrome (338323833).

It can be divided in two parts, 20401 and 3431, that added together give a palindrome (23832).

The spelling of 204013431 in words is "two hundred four million, thirteen thousand, four hundred thirty-one".