205213534 has 8 divisors (see below), whose sum is σ = 307890648. Its totient is φ = 102583320.

The previous prime is 205213529. The next prime is 205213553. The reversal of 205213534 is 435312502.

205213534 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×205213534² = 84225189073538312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205213499 and 205213508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2829 + ... + 20455.

It is an arithmetic number, because the mean of its divisors is an integer number (38486331).

Almost surely, 2^205213534 is an apocalyptic number.

205213534 is a deficient number, since it is larger than the sum of its proper divisors (102677114).

205213534 is a wasteful number, since it uses less digits than its factorization.

205213534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23450.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 205213534 is about 14325.2760531865. The cubic root of 205213534 is about 589.8415106230.

The spelling of 205213534 in words is "two hundred five million, two hundred thirteen thousand, five hundred thirty-four".