2231000205 has 16 divisors (see below), whose sum is σ = 4079543424. Its totient is φ = 1019885760.

The previous prime is 2231000173. The next prime is 2231000209. The reversal of 2231000205 is 5020001322.

2231000205 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2231000205 - 2⁵ = 2231000173 is a prime.

It is a super-3 number, since 3×2231000205³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231000209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10623706 + ... + 10623915.

It is an arithmetic number, because the mean of its divisors is an integer number (254971464).

Almost surely, 2^2231000205 is an apocalyptic number.

It is an amenable number.

2231000205 is a deficient number, since it is larger than the sum of its proper divisors (1848543219).

2231000205 is a wasteful number, since it uses less digits than its factorization.

2231000205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21247636.

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

The square root of 2231000205 is about 47233.4648845498. The cubic root of 2231000205 is about 1306.6718549863.

Adding to 2231000205 its reverse (5020001322), we get a palindrome (7251001527).

The spelling of 2231000205 in words is "two billion, two hundred thirty-one million, two hundred five", and thus it is an aban number.