1121928317 has 4 divisors (see below), whose sum is σ = 1122011196. Its totient is φ = 1121845440.

The previous prime is 1121928299. The next prime is 1121928323. The reversal of 1121928317 is 7138291211.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 590441401 + 531486916 = 24299^2 + 23054^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121928317 - 2⁸ = 1121928061 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 (1121928377) 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, 15878 + ... + 49959.

It is an arithmetic number, because the mean of its divisors is an integer number (280502799).

Almost surely, 2^1121928317 is an apocalyptic number.

It is an amenable number.

1121928317 is a deficient number, since it is larger than the sum of its proper divisors (82879).

1121928317 is an equidigital number, since it uses as much as digits as its factorization.

1121928317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82878.

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

The square root of 1121928317 is about 33495.1984170866. The cubic root of 1121928317 is about 1039.0944771422.

The spelling of 1121928317 in words is "one billion, one hundred twenty-one million, nine hundred twenty-eight thousand, three hundred seventeen".