2000013123 has 4 divisors (see below), whose sum is σ = 2666684168. Its totient is φ = 1333342080.

The previous prime is 2000013121. The next prime is 2000013149. The reversal of 2000013123 is 3213100002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2000013123 - 2¹ = 2000013121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000013099 and 2000013108.

It is not an unprimeable number, because it can be changed into a prime (2000013121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333335518 + ... + 333335523.

It is an arithmetic number, because the mean of its divisors is an integer number (666671042).

Almost surely, 2^2000013123 is an apocalyptic number.

2000013123 is a deficient number, since it is larger than the sum of its proper divisors (666671045).

2000013123 is an equidigital number, since it uses as much as digits as its factorization.

2000013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666671044.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2000013123 is about 44721.5062693555. The cubic root of 2000013123 is about 1259.9238055462.

Adding to 2000013123 its reverse (3213100002), we get a palindrome (5213113125).

The spelling of 2000013123 in words is "two billion, thirteen thousand, one hundred twenty-three".