2002431123 has 24 divisors (see below), whose sum is σ = 3606110976. Its totient is φ = 1040223600.

The previous prime is 2002431113. The next prime is 2002431127. The reversal of 2002431123 is 3211342002.

It is not a de Polignac number, because 2002431123 - 2¹⁸ = 2002168979 is a prime.

It is a super-2 number, since 2×2002431123² = 8019460804718082258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2002431096 and 2002431105.

It is not an unprimeable number, because it can be changed into a prime (2002431127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1444063 + ... + 1445448.

It is an arithmetic number, because the mean of its divisors is an integer number (150254624).

Almost surely, 2^2002431123 is an apocalyptic number.

2002431123 is a deficient number, since it is larger than the sum of its proper divisors (1603679853).

2002431123 is a wasteful number, since it uses less digits than its factorization.

2002431123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889535 (or 2889532 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2002431123 is about 44748.5320764827. The cubic root of 2002431123 is about 1260.4313470253.

Adding to 2002431123 its reverse (3211342002), we get a palindrome (5213773125).

The spelling of 2002431123 in words is "two billion, two million, four hundred thirty-one thousand, one hundred twenty-three".