1205211303 has 6 divisors (see below), whose sum is σ = 1740860784. Its totient is φ = 803474196.

The previous prime is 1205211289. The next prime is 1205211313. The reversal of 1205211303 is 3031125021.

1205211303 is a `hidden beast` number, since 12 + 0 + 521 + 130 + 3 = 666.

It is not a de Polignac number, because 1205211303 - 2⁹ = 1205210791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205211313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66956175 + ... + 66956192.

It is an arithmetic number, because the mean of its divisors is an integer number (290143464).

Almost surely, 2^1205211303 is an apocalyptic number.

1205211303 is a deficient number, since it is larger than the sum of its proper divisors (535649481).

1205211303 is a wasteful number, since it uses less digits than its factorization.

1205211303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133912373 (or 133912370 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1205211303 is about 34716.1533439406. The cubic root of 1205211303 is about 1064.1946354580.

Adding to 1205211303 its reverse (3031125021), we get a palindrome (4236336324).

The spelling of 1205211303 in words is "one billion, two hundred five million, two hundred eleven thousand, three hundred three".