1123345680 has 40 divisors (see below), whose sum is σ = 3482372352. Its totient is φ = 299558784.

The previous prime is 1123345673. The next prime is 1123345687. The reversal of 1123345680 is 865433211.

It is an interprime number because it is at equal distance from previous prime (1123345673) and next prime (1123345687).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1123345687) 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 7 ways as a sum of consecutive naturals, for example, 2340064 + ... + 2340543.

Almost surely, 2^1123345680 is an apocalyptic number.

1123345680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123345680 is an abundant number, since it is smaller than the sum of its proper divisors (2359026672).

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

1123345680 is a wasteful number, since it uses less digits than its factorization.

1123345680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680623 (or 4680617 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1123345680 is about 33516.3494432195. The cubic root of 1123345680 is about 1039.5318652472.

Adding to 1123345680 its reverse (865433211), we get a palindrome (1988778891).

The spelling of 1123345680 in words is "one billion, one hundred twenty-three million, three hundred forty-five thousand, six hundred eighty".