2231205 has 8 divisors (see below), whose sum is σ = 3569952. Its totient is φ = 1189968.

The previous prime is 2231171. The next prime is 2231209. The reversal of 2231205 is 5021322.

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

It is not a de Polignac number, because 2231205 - 2⁷ = 2231077 is a prime.

It is a super-3 number, since 3×2231205³ = 33322661247890820375, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 148747 = 2231205 / (2 + 2 + 3 + 1 + 2 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74359 + ... + 74388.

It is an arithmetic number, because the mean of its divisors is an integer number (446244).

2^2231205 is an apocalyptic number.

It is an amenable number.

2231205 is a deficient number, since it is larger than the sum of its proper divisors (1338747).

2231205 is a wasteful number, since it uses less digits than its factorization.

2231205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148755.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2231205 is about 1493.7218616597. The cubic root of 2231205 is about 130.6711835810.

Adding to 2231205 its reverse (5021322), we get a palindrome (7252527).

The spelling of 2231205 in words is "two million, two hundred thirty-one thousand, two hundred five".