1123317780 has 96 divisors (see below), whose sum is σ = 3478871424. Its totient is φ = 269028864.

The previous prime is 1123317773. The next prime is 1123317781. The reversal of 1123317780 is 877133211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123317781) 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 in 31 ways as a sum of consecutive naturals, for example, 9399 + ... + 48321.

It is an arithmetic number, because the mean of its divisors is an integer number (36238244).

Almost surely, 2^1123317780 is an apocalyptic number.

1123317780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123317780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1739435712).

1123317780 is an abundant number, since it is smaller than the sum of its proper divisors (2355553644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123317780 is a wasteful number, since it uses less digits than its factorization.

1123317780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38985 (or 38983 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 1123317780 is about 33515.9332258554. The cubic root of 1123317780 is about 1039.5232590572.

The spelling of 1123317780 in words is "one billion, one hundred twenty-three million, three hundred seventeen thousand, seven hundred eighty".