2631606321 has 8 divisors (see below), whose sum is σ = 3590408800. Its totient is φ = 1713604032.

The previous prime is 2631606311. The next prime is 2631606353. The reversal of 2631606321 is 1236061362.

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

It is not a de Polignac number, because 2631606321 - 2⁷ = 2631606193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2631606311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10199896 + ... + 10200153.

It is an arithmetic number, because the mean of its divisors is an integer number (448801100).

Almost surely, 2^2631606321 is an apocalyptic number.

It is an amenable number.

2631606321 is a deficient number, since it is larger than the sum of its proper divisors (958802479).

2631606321 is a wasteful number, since it uses less digits than its factorization.

2631606321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20400095.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 2631606321 is about 51299.1844087214. The cubic root of 2631606321 is about 1380.6183466051.

Adding to 2631606321 its reverse (1236061362), we get a palindrome (3867667683).

The spelling of 2631606321 in words is "two billion, six hundred thirty-one million, six hundred six thousand, three hundred twenty-one".