1161245303 has 4 divisors (see below), whose sum is σ = 1161317088. Its totient is φ = 1161173520.

The previous prime is 1161245269. The next prime is 1161245311. The reversal of 1161245303 is 3035421611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3035421611 = 8273 ⋅366907.

It is a cyclic number.

It is not a de Polignac number, because 1161245303 - 2¹⁴ = 1161228919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161245353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043 + ... + 48203.

It is an arithmetic number, because the mean of its divisors is an integer number (290329272).

Almost surely, 2^1161245303 is an apocalyptic number.

1161245303 is a deficient number, since it is larger than the sum of its proper divisors (71785).

1161245303 is an equidigital number, since it uses as much as digits as its factorization.

1161245303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71784.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1161245303 is about 34077.0495054956. The cubic root of 1161245303 is about 1051.0934347857.

Adding to 1161245303 its reverse (3035421611), we get a palindrome (4196666914).

The spelling of 1161245303 in words is "one billion, one hundred sixty-one million, two hundred forty-five thousand, three hundred three".