2231165616 has 20 divisors (see below), whose sum is σ = 5763844632. Its totient is φ = 743721856.

The previous prime is 2231165597. The next prime is 2231165617. The reversal of 2231165616 is 6165611322.

It is a super-3 number, since 3×2231165616³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231165617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23241261 + ... + 23241356.

Almost surely, 2^2231165616 is an apocalyptic number.

It is an amenable number.

2231165616 is an abundant number, since it is smaller than the sum of its proper divisors (3532679016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231165616 is a wasteful number, since it uses less digits than its factorization.

2231165616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46482628 (or 46482622 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 2231165616 is about 47235.2158458072. The cubic root of 2231165616 is about 1306.7041473121.

Adding to 2231165616 its reverse (6165611322), we get a palindrome (8396776938).

The spelling of 2231165616 in words is "two billion, two hundred thirty-one million, one hundred sixty-five thousand, six hundred sixteen".