1123613780281 has 8 divisors (see below), whose sum is σ = 1127841580800. Its totient is φ = 1119386580480.

The previous prime is 1123613780209. The next prime is 1123613780293. The reversal of 1123613780281 is 1820873163211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123613780281 - 2²⁷ = 1123479562553 is a prime.

It is a super-3 number, since 3×1123613780281³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123613780381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3791865 + ... + 4077433.

It is an arithmetic number, because the mean of its divisors is an integer number (140980197600).

Almost surely, 2^{1123613780281} is an apocalyptic number.

It is an amenable number.

1123613780281 is a deficient number, since it is larger than the sum of its proper divisors (4227800519).

1123613780281 is a wasteful number, since it uses less digits than its factorization.

1123613780281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300359.

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 1123613780281 in words is "one trillion, one hundred twenty-three billion, six hundred thirteen million, seven hundred eighty thousand, two hundred eighty-one".