2002431 has 4 divisors (see below), whose sum is σ = 2669912. Its totient is φ = 1334952.

The previous prime is 2002417. The next prime is 2002453. The reversal of 2002431 is 1342002.

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

It is not a de Polignac number, because 2002431 - 2⁷ = 2002303 is a prime.

It is a super-2 number, since 2×2002431² = 8019459819522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002471) 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, 333736 + ... + 333741.

It is an arithmetic number, because the mean of its divisors is an integer number (667478).

2^2002431 is an apocalyptic number.

2002431 is a deficient number, since it is larger than the sum of its proper divisors (667481).

2002431 is an equidigital number, since it uses as much as digits as its factorization.

2002431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667480.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2002431 is about 1415.0727896472. The cubic root of 2002431 is about 126.0431321218.

Adding to 2002431 its reverse (1342002), we get a palindrome (3344433).

The spelling of 2002431 in words is "two million, two thousand, four hundred thirty-one".