1356234205 has 4 divisors (see below), whose sum is σ = 1627481052. Its totient is φ = 1084987360.

The previous prime is 1356234197. The next prime is 1356234227. The reversal of 1356234205 is 5024326531.

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 2 ways, for example, as 975750169 + 380484036 = 31237^2 + 19506^2 .

It is not a de Polignac number, because 1356234205 - 2³ = 1356234197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135623416 + ... + 135623425.

It is an arithmetic number, because the mean of its divisors is an integer number (406870263).

Almost surely, 2^1356234205 is an apocalyptic number.

It is an amenable number.

1356234205 is a deficient number, since it is larger than the sum of its proper divisors (271246847).

1356234205 is an equidigital number, since it uses as much as digits as its factorization.

1356234205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271246846.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1356234205 is about 36827.0852091229. The cubic root of 1356234205 is about 1106.9080973453.

The spelling of 1356234205 in words is "one billion, three hundred fifty-six million, two hundred thirty-four thousand, two hundred five".