1117223491 has 2 divisors, whose sum is σ = 1117223492. Its totient is φ = 1117223490.

The previous prime is 1117223489. The next prime is 1117223501. The reversal of 1117223491 is 1943227111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1117223491 - 2¹ = 1117223489 is a prime.

Together with 1117223489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1117223441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558611745 + 558611746.

It is an arithmetic number, because the mean of its divisors is an integer number (558611746).

Almost surely, 2^1117223491 is an apocalyptic number.

1117223491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117223491 is an equidigital number, since it uses as much as digits as its factorization.

1117223491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 1117223491 is about 33424.8932833001. The cubic root of 1117223491 is about 1037.6399551072.

The spelling of 1117223491 in words is "one billion, one hundred seventeen million, two hundred twenty-three thousand, four hundred ninety-one".