2002031002123 has 4 divisors (see below), whose sum is σ = 2016644367240. Its totient is φ = 1987417637008.

The previous prime is 2002031002093. The next prime is 2002031002141. The reversal of 2002031002123 is 3212001302002.

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 2002031002123 - 2²¹ = 2002028904971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002031002097 and 2002031002106.

It is not an unprimeable number, because it can be changed into a prime (2002031002183) 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, 7306682353 + ... + 7306682626.

It is an arithmetic number, because the mean of its divisors is an integer number (504161091810).

Almost surely, 2^{2002031002123} is an apocalyptic number.

2002031002123 is a deficient number, since it is larger than the sum of its proper divisors (14613365117).

2002031002123 is a wasteful number, since it uses less digits than its factorization.

2002031002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14613365116.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 2002031002123 its reverse (3212001302002), we get a palindrome (5214032304125).

The spelling of 2002031002123 in words is "two trillion, two billion, thirty-one million, two thousand, one hundred twenty-three".