1205343061 has 8 divisors (see below), whose sum is σ = 1374418584. Its totient is φ = 1047175680.

The previous prime is 1205343031. The next prime is 1205343079. The reversal of 1205343061 is 1603435021.

It can be written as a sum of positive squares in 4 ways, for example, as 37822500 + 1167520561 = 6150^2 + 34169^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1205343061 - 2²³ = 1196954453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205343031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2726800 + ... + 2727241.

It is an arithmetic number, because the mean of its divisors is an integer number (171802323).

Almost surely, 2^1205343061 is an apocalyptic number.

It is an amenable number.

1205343061 is a deficient number, since it is larger than the sum of its proper divisors (169075523).

1205343061 is a wasteful number, since it uses less digits than its factorization.

1205343061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5454071.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1205343061 is about 34718.0509389568. The cubic root of 1205343061 is about 1064.2334145631.

Adding to 1205343061 its reverse (1603435021), we get a palindrome (2808778082).

The spelling of 1205343061 in words is "one billion, two hundred five million, three hundred forty-three thousand, sixty-one".