2002321031 has 4 divisors (see below), whose sum is σ = 2066912064. Its totient is φ = 1937730000.

The previous prime is 2002321019. The next prime is 2002321039. The reversal of 2002321031 is 1301232002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002321031 is a prime.

It is a super-2 number, since 2×2002321031² = 8018579022369805922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002320997 and 2002321015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002321039) 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, 32295470 + ... + 32295531.

It is an arithmetic number, because the mean of its divisors is an integer number (516728016).

Almost surely, 2^2002321031 is an apocalyptic number.

2002321031 is a deficient number, since it is larger than the sum of its proper divisors (64591033).

2002321031 is an equidigital number, since it uses as much as digits as its factorization.

2002321031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64591032.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2002321031 is about 44747.3019410109. The cubic root of 2002321031 is about 1260.4082474457.

Adding to 2002321031 its reverse (1301232002), we get a palindrome (3303553033).

The spelling of 2002321031 in words is "two billion, two million, three hundred twenty-one thousand, thirty-one".