113123100001 has 4 divisors (see below), whose sum is σ = 113123840004. Its totient is φ = 113122360000.

The previous prime is 113123099987. The next prime is 113123100023. The reversal of 113123100001 is 100001321311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100001321311 = 5387 ⋅18563453.

It can be written as a sum of positive squares in 2 ways, for example, as 101006374225 + 12116725776 = 317815^2 + 110076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113123100001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113123100301) 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, 46300 + ... + 477901.

It is an arithmetic number, because the mean of its divisors is an integer number (28280960001).

Almost surely, 2^113123100001 is an apocalyptic number.

It is an amenable number.

113123100001 is a deficient number, since it is larger than the sum of its proper divisors (740003).

113123100001 is an equidigital number, since it uses as much as digits as its factorization.

113123100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740002.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 113123100001 its reverse (100001321311), we get a palindrome (213124421312).

The spelling of 113123100001 in words is "one hundred thirteen billion, one hundred twenty-three million, one hundred thousand, one".