2002981 has 4 divisors (see below), whose sum is σ = 2031264. Its totient is φ = 1974700.

The previous prime is 2002969. The next prime is 2002993. The reversal of 2002981 is 1892002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2002969) and next prime (2002993).

It is a cyclic number.

It is not a de Polignac number, because 2002981 - 2⁷ = 2002853 is a prime.

It is a super-2 number, since 2×2002981² = 8023865772722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (2002681) 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, 14035 + ... + 14176.

It is an arithmetic number, because the mean of its divisors is an integer number (507816).

2^2002981 is an apocalyptic number.

It is an amenable number.

2002981 is a deficient number, since it is larger than the sum of its proper divisors (28283).

2002981 is an equidigital number, since it uses as much as digits as its factorization.

2002981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28282.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2002981 is about 1415.2671125975. The cubic root of 2002981 is about 126.0546709924.

Adding to 2002981 its reverse (1892002), we get a palindrome (3894983).

The spelling of 2002981 in words is "two million, two thousand, nine hundred eighty-one".