2205931 has 12 divisors (see below), whose sum is σ = 2764272. Its totient is φ = 1744848.

The previous prime is 2205911. The next prime is 2205947. The reversal of 2205931 is 1395022.

2205931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2205931 - 2⁷ = 2205803 is a prime.

It is a super-2 number, since 2×2205931² = 9732263153522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2205911) 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 11 ways as a sum of consecutive naturals, for example, 1095 + ... + 2368.

It is an arithmetic number, because the mean of its divisors is an integer number (230356).

2^2205931 is an apocalyptic number.

2205931 is a deficient number, since it is larger than the sum of its proper divisors (558341).

2205931 is a wasteful number, since it uses less digits than its factorization.

2205931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490 (or 3483 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2205931 is about 1485.2376914151. The cubic root of 2205931 is about 130.1759156901.

It can be divided in two parts, 2205 and 931, that added together give a square (3136 = 56²).

The spelling of 2205931 in words is "two million, two hundred five thousand, nine hundred thirty-one".