2005442231 has 8 divisors (see below), whose sum is σ = 2160971904. Its totient is φ = 1850093280.

The previous prime is 2005442221. The next prime is 2005442237. The reversal of 2005442231 is 1322445002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2005442231 - 2⁶ = 2005442167 is a prime.

It is a super-2 number, since 2×2005442231² = 8043597083756514722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2005442197 and 2005442206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005442237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21671 + ... + 66936.

It is an arithmetic number, because the mean of its divisors is an integer number (270121488).

Almost surely, 2^2005442231 is an apocalyptic number.

2005442231 is a deficient number, since it is larger than the sum of its proper divisors (155529673).

2005442231 is a wasteful number, since it uses less digits than its factorization.

2005442231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90361.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2005442231 is about 44782.1642062998. The cubic root of 2005442231 is about 1261.0628117975.

Adding to 2005442231 its reverse (1322445002), we get a palindrome (3327887233).

The spelling of 2005442231 in words is "two billion, five million, four hundred forty-two thousand, two hundred thirty-one".