2230981 has 4 divisors (see below), whose sum is σ = 2244832. Its totient is φ = 2217132.

The previous prime is 2230979. The next prime is 2231011. The reversal of 2230981 is 1890322.

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 a cyclic number.

It is not a de Polignac number, because 2230981 - 2¹ = 2230979 is a prime.

It is a super-3 number, since 3×2230981³ = 33312626051517498423, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

2230981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2230951) 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, 6681 + ... + 7006.

It is an arithmetic number, because the mean of its divisors is an integer number (561208).

2^2230981 is an apocalyptic number.

It is an amenable number.

2230981 is a deficient number, since it is larger than the sum of its proper divisors (13851).

2230981 is a wasteful number, since it uses less digits than its factorization.

2230981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13850.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2230981 is about 1493.6468792857. The cubic root of 2230981 is about 130.6668105591. Note that the first 3 decimals are identical.

The spelling of 2230981 in words is "two million, two hundred thirty thousand, nine hundred eighty-one".