204156343 has 16 divisors (see below), whose sum is σ = 218524320. Its totient is φ = 190425600.

The previous prime is 204156319. The next prime is 204156347. The reversal of 204156343 is 343651402.

It is a cyclic number.

It is not a de Polignac number, because 204156343 - 2¹⁷ = 204025271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204156347) 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, 88363 + ... + 90643.

It is an arithmetic number, because the mean of its divisors is an integer number (13657770).

Almost surely, 2^204156343 is an apocalyptic number.

204156343 is a deficient number, since it is larger than the sum of its proper divisors (14367977).

204156343 is a wasteful number, since it uses less digits than its factorization.

204156343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 204156343 is about 14288.3289085883. The cubic root of 204156343 is about 588.8268780174.

The spelling of 204156343 in words is "two hundred four million, one hundred fifty-six thousand, three hundred forty-three".