2154352321 has 16 divisors (see below), whose sum is σ = 2418320448. Its totient is φ = 1902472000.

The previous prime is 2154352303. The next prime is 2154352349. The reversal of 2154352321 is 1232534512.

It is not a de Polignac number, because 2154352321 - 2¹¹ = 2154350273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2154352321.

It is not an unprimeable number, because it can be changed into a prime (2154352351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40590 + ... + 77176.

It is an arithmetic number, because the mean of its divisors is an integer number (151145028).

Almost surely, 2^2154352321 is an apocalyptic number.

It is an amenable number.

2154352321 is a deficient number, since it is larger than the sum of its proper divisors (263968127).

2154352321 is a wasteful number, since it uses less digits than its factorization.

2154352321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36752.

The product of its digits is 7200, while the sum is 28.

The square root of 2154352321 is about 46415.0010341484. The cubic root of 2154352321 is about 1291.5332051593.

Adding to 2154352321 its reverse (1232534512), we get a palindrome (3386886833).

The spelling of 2154352321 in words is "two billion, one hundred fifty-four million, three hundred fifty-two thousand, three hundred twenty-one".