205161423 has 8 divisors (see below), whose sum is σ = 289639728. Its totient is φ = 128728704.

The previous prime is 205161421. The next prime is 205161431. The reversal of 205161423 is 324161502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205161423 - 2¹ = 205161421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205161393 and 205161402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205161421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2011336 + ... + 2011437.

It is an arithmetic number, because the mean of its divisors is an integer number (36204966).

Almost surely, 2^205161423 is an apocalyptic number.

205161423 is a deficient number, since it is larger than the sum of its proper divisors (84478305).

205161423 is a wasteful number, since it uses less digits than its factorization.

205161423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022793.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 205161423 is about 14323.4570896833. The cubic root of 205161423 is about 589.7915791646.

The spelling of 205161423 in words is "two hundred five million, one hundred sixty-one thousand, four hundred twenty-three".