2661632231 has 8 divisors (see below), whose sum is σ = 2719160064. Its totient is φ = 2604141880.

The previous prime is 2661632227. The next prime is 2661632257. The reversal of 2661632231 is 1322361662.

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 2661632231 - 2² = 2661632227 is a prime.

It is a super-2 number, since 2×2661632231² = 14168572266196074722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661632291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171296 + ... + 186186.

It is an arithmetic number, because the mean of its divisors is an integer number (339895008).

Almost surely, 2^2661632231 is an apocalyptic number.

2661632231 is a deficient number, since it is larger than the sum of its proper divisors (57527833).

2661632231 is a wasteful number, since it uses less digits than its factorization.

2661632231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18741.

The product of its digits is 15552, while the sum is 32.

The square root of 2661632231 is about 51591.0092070314. The cubic root of 2661632231 is about 1385.8493282666.

Adding to 2661632231 its reverse (1322361662), we get a palindrome (3983993893).

The spelling of 2661632231 in words is "two billion, six hundred sixty-one million, six hundred thirty-two thousand, two hundred thirty-one".