2231540405 has 16 divisors (see below), whose sum is σ = 2820547200. Its totient is φ = 1690217280.

The previous prime is 2231540383. The next prime is 2231540417. The reversal of 2231540405 is 5040451322.

It is a happy number.

It is not a de Polignac number, because 2231540405 - 2⁸ = 2231540149 is a prime.

It is a super-3 number, since 3×2231540405³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167531 + ... + 180359.

It is an arithmetic number, because the mean of its divisors is an integer number (176284200).

Almost surely, 2^2231540405 is an apocalyptic number.

It is an amenable number.

2231540405 is a deficient number, since it is larger than the sum of its proper divisors (589006795).

2231540405 is a wasteful number, since it uses less digits than its factorization.

2231540405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14684.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2231540405 is about 47239.1829417063. The cubic root of 2231540405 is about 1306.7773095071. Note that the first 3 decimals are identical.

Adding to 2231540405 its reverse (5040451322), we get a palindrome (7271991727).

The spelling of 2231540405 in words is "two billion, two hundred thirty-one million, five hundred forty thousand, four hundred five".