2002431994 has 16 divisors (see below), whose sum is σ = 3054748680. Its totient is φ = 984202560.

The previous prime is 2002431979. The next prime is 2002432007. The reversal of 2002431994 is 4991342002.

It can be written as a sum of positive squares in 4 ways, for example, as 593555769 + 1408876225 = 24363^2 + 37535^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248452 + ... + 256384.

Almost surely, 2^2002431994 is an apocalyptic number.

2002431994 is a deficient number, since it is larger than the sum of its proper divisors (1052316686).

2002431994 is a wasteful number, since it uses less digits than its factorization.

2002431994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10065.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 2002431994 is about 44748.5418086444. The cubic root of 2002431994 is about 1260.4315297757.

Adding to 2002431994 its reverse (4991342002), we get a palindrome (6993773996).

The spelling of 2002431994 in words is "two billion, two million, four hundred thirty-one thousand, nine hundred ninety-four".