1108131947 has 4 divisors (see below), whose sum is σ = 1193372880. Its totient is φ = 1022891016.

The previous prime is 1108131929. The next prime is 1108131953. The reversal of 1108131947 is 7491318011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1108131947 - 2⁶ = 1108131883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1108131047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42620447 + ... + 42620472.

It is an arithmetic number, because the mean of its divisors is an integer number (298343220).

Almost surely, 2^1108131947 is an apocalyptic number.

1108131947 is a deficient number, since it is larger than the sum of its proper divisors (85240933).

1108131947 is an equidigital number, since it uses as much as digits as its factorization.

1108131947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85240932.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 1108131947 is about 33288.6158769030. The cubic root of 1108131947 is about 1034.8176445203.

Adding to 1108131947 its reverse (7491318011), we get a palindrome (8599449958).

The spelling of 1108131947 in words is "one billion, one hundred eight million, one hundred thirty-one thousand, nine hundred forty-seven".