1171280203 has 2 divisors, whose sum is σ = 1171280204. Its totient is φ = 1171280202.

The previous prime is 1171280197. The next prime is 1171280207. The reversal of 1171280203 is 3020821711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1171280203 - 2²⁹ = 634409291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1171280207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585640101 + 585640102.

It is an arithmetic number, because the mean of its divisors is an integer number (585640102).

Almost surely, 2^1171280203 is an apocalyptic number.

1171280203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171280203 is an equidigital number, since it uses as much as digits as its factorization.

1171280203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1171280203 is about 34223.9711751866. The cubic root of 1171280203 is about 1054.1124294515.

The spelling of 1171280203 in words is "one billion, one hundred seventy-one million, two hundred eighty thousand, two hundred three".