1101603311 has 2 divisors, whose sum is σ = 1101603312. Its totient is φ = 1101603310.

The previous prime is 1101603301. The next prime is 1101603313. The reversal of 1101603311 is 1133061011.

It is a strong prime.

It is an emirp because it is prime and its reverse (1133061011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101603311 is a prime.

It is a Sophie Germain prime.

Together with 1101603313, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1101603311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101603313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550801655 + 550801656.

It is an arithmetic number, because the mean of its divisors is an integer number (550801656).

Almost surely, 2^1101603311 is an apocalyptic number.

1101603311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101603311 is an equidigital number, since it uses as much as digits as its factorization.

1101603311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1101603311 is about 33190.4099251576. The cubic root of 1101603311 is about 1032.7814071527.

Adding to 1101603311 its reverse (1133061011), we get a palindrome (2234664322).

The spelling of 1101603311 in words is "one billion, one hundred one million, six hundred three thousand, three hundred eleven".