2011011423 has 4 divisors (see below), whose sum is σ = 2681348568. Its totient is φ = 1340674280.

The previous prime is 2011011421. The next prime is 2011011491. The reversal of 2011011423 is 3241101102.

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

It is a cyclic number.

It is not a de Polignac number, because 2011011423 - 2¹ = 2011011421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011011421) 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, 335168568 + ... + 335168573.

It is an arithmetic number, because the mean of its divisors is an integer number (670337142).

Almost surely, 2^2011011423 is an apocalyptic number.

2011011423 is a deficient number, since it is larger than the sum of its proper divisors (670337145).

2011011423 is an equidigital number, since it uses as much as digits as its factorization.

2011011423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670337144.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2011011423 is about 44844.3020126303. The cubic root of 2011011423 is about 1262.2290732307.

Adding to 2011011423 its reverse (3241101102), we get a palindrome (5252112525).

The spelling of 2011011423 in words is "two billion, eleven million, eleven thousand, four hundred twenty-three".