2011009123 has 8 divisors (see below), whose sum is σ = 2062601856. Its totient is φ = 1959537600.

The previous prime is 2011009111. The next prime is 2011009127. The reversal of 2011009123 is 3219001102.

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

It is a de Polignac number, because none of the positive numbers 2^k-2011009123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011009123.

It is not an unprimeable number, because it can be changed into a prime (2011009127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3790 + ... + 63532.

It is an arithmetic number, because the mean of its divisors is an integer number (257825232).

Almost surely, 2^2011009123 is an apocalyptic number.

2011009123 is a deficient number, since it is larger than the sum of its proper divisors (51592733).

2011009123 is an equidigital number, since it uses as much as digits as its factorization.

2011009123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60605.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 2011009123 is about 44844.2763683394. The cubic root of 2011009123 is about 1262.2285920254.

The spelling of 2011009123 in words is "two billion, eleven million, nine thousand, one hundred twenty-three".