2197031 has 4 divisors (see below), whose sum is σ = 2217672. Its totient is φ = 2176392.

The previous prime is 2197021. The next prime is 2197043. The reversal of 2197031 is 1307912.

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

It is a cyclic number.

It is not a de Polignac number, because 2197031 - 2⁶ = 2196967 is a prime.

It is a super-2 number, since 2×2197031² = 9653890429922, 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 = 2196988 and 2197006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197021) 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, 10160 + ... + 10373.

It is an arithmetic number, because the mean of its divisors is an integer number (554418).

2^2197031 is an apocalyptic number.

2197031 is a deficient number, since it is larger than the sum of its proper divisors (20641).

2197031 is a wasteful number, since it uses less digits than its factorization.

2197031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20640.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 2197031 is about 1482.2385098222. The cubic root of 2197031 is about 130.0006114370. Note that the first 3 decimals are identical.

The spelling of 2197031 in words is "two million, one hundred ninety-seven thousand, thirty-one".