2231997 has 8 divisors (see below), whose sum is σ = 2986656. Its totient is φ = 1482672.

The previous prime is 2231941. The next prime is 2232017. The reversal of 2231997 is 7991322.

2231997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2231997 - 2¹⁵ = 2199229 is a prime.

It is a super-3 number, since 3×2231997³ = 33358158994932791919, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223 + ... + 2124.

It is an arithmetic number, because the mean of its divisors is an integer number (373332).

2^2231997 is an apocalyptic number.

It is an amenable number.

2231997 is a deficient number, since it is larger than the sum of its proper divisors (754659).

2231997 is a wasteful number, since it uses less digits than its factorization.

2231997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667.

The product of its digits is 6804, while the sum is 33.

The square root of 2231997 is about 1493.9869477341. The cubic root of 2231997 is about 130.6866429903.

The spelling of 2231997 in words is "two million, two hundred thirty-one thousand, nine hundred ninety-seven".