2321536651 has 24 divisors (see below), whose sum is σ = 2737368000. Its totient is φ = 1962963072.

The previous prime is 2321536619. The next prime is 2321536663. The reversal of 2321536651 is 1566351232.

It is not a de Polignac number, because 2321536651 - 2⁵ = 2321536619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321536691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1160350 + ... + 1162348.

It is an arithmetic number, because the mean of its divisors is an integer number (114057000).

Almost surely, 2^2321536651 is an apocalyptic number.

2321536651 is a deficient number, since it is larger than the sum of its proper divisors (415831349).

2321536651 is a wasteful number, since it uses less digits than its factorization.

2321536651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323 (or 2316 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 2321536651 is about 48182.3271646358. The cubic root of 2321536651 is about 1324.1134025638.

Adding to 2321536651 its reverse (1566351232), we get a palindrome (3887887883).

The spelling of 2321536651 in words is "two billion, three hundred twenty-one million, five hundred thirty-six thousand, six hundred fifty-one".