1203055361 has 4 divisors (see below), whose sum is σ = 1210718292. Its totient is φ = 1195392432.

The previous prime is 1203055349. The next prime is 1203055367. The reversal of 1203055361 is 1635503021.

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 311734336 + 891321025 = 17656^2 + 29855^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203055361 - 2⁶ = 1203055297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1203055361.

It is not an unprimeable number, because it can be changed into a prime (1203055367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3831230 + ... + 3831543.

It is an arithmetic number, because the mean of its divisors is an integer number (302679573).

Almost surely, 2^1203055361 is an apocalyptic number.

It is an amenable number.

1203055361 is a deficient number, since it is larger than the sum of its proper divisors (7662931).

1203055361 is an equidigital number, since it uses as much as digits as its factorization.

1203055361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7662930.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1203055361 is about 34685.0884531091. The cubic root of 1203055361 is about 1063.5596952490.

Adding to 1203055361 its reverse (1635503021), we get a palindrome (2838558382).

The spelling of 1203055361 in words is "one billion, two hundred three million, fifty-five thousand, three hundred sixty-one".