205134031 has 4 divisors (see below), whose sum is σ = 210678232. Its totient is φ = 199589832.

The previous prime is 205134011. The next prime is 205134067. The reversal of 205134031 is 130431502.

205134031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205134031 - 2²⁵ = 171579599 is a prime.

It is a super-2 number, since 2×205134031² = 84159941348617922, 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 (205134001) 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, 2772045 + ... + 2772118.

It is an arithmetic number, because the mean of its divisors is an integer number (52669558).

Almost surely, 2^205134031 is an apocalyptic number.

205134031 is a deficient number, since it is larger than the sum of its proper divisors (5544201).

205134031 is an equidigital number, since it uses as much as digits as its factorization.

205134031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544200.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 205134031 is about 14322.5008640251. The cubic root of 205134031 is about 589.7653294442.

Adding to 205134031 its reverse (130431502), we get a palindrome (335565533).

The spelling of 205134031 in words is "two hundred five million, one hundred thirty-four thousand, thirty-one".