205031026 has 4 divisors (see below), whose sum is σ = 307546542. Its totient is φ = 102515512.

The previous prime is 205031011. The next prime is 205031053. The reversal of 205031026 is 620130502.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 194630401 + 10400625 = 13951^2 + 3225^2 .

It is a super-2 number, since 2×205031026² = 84075443245225352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205030994 and 205031012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51257755 + ... + 51257758.

Almost surely, 2^205031026 is an apocalyptic number.

205031026 is a deficient number, since it is larger than the sum of its proper divisors (102515516).

205031026 is a wasteful number, since it uses less digits than its factorization.

205031026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102515515.

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

The square root of 205031026 is about 14318.9044972023. The cubic root of 205031026 is about 589.6665989567. Note that the first 3 decimals are identical.

Adding to 205031026 its reverse (620130502), we get a palindrome (825161528).

The spelling of 205031026 in words is "two hundred five million, thirty-one thousand, twenty-six".