2002111423 has 4 divisors (see below), whose sum is σ = 2156120008. Its totient is φ = 1848102840.

The previous prime is 2002111417. The next prime is 2002111427. The reversal of 2002111423 is 3241112002.

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 2002111423 - 2⁹ = 2002110911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002111397 and 2002111406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002111427) 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, 77004273 + ... + 77004298.

It is an arithmetic number, because the mean of its divisors is an integer number (539030002).

Almost surely, 2^2002111423 is an apocalyptic number.

2002111423 is a deficient number, since it is larger than the sum of its proper divisors (154008585).

2002111423 is a wasteful number, since it uses less digits than its factorization.

2002111423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154008584.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2002111423 is about 44744.9597496746. The cubic root of 2002111423 is about 1260.3642650095.

Adding to 2002111423 its reverse (3241112002), we get a palindrome (5243223425).

The spelling of 2002111423 in words is "two billion, two million, one hundred eleven thousand, four hundred twenty-three".