2645310321 has 24 divisors (see below), whose sum is σ = 4151863040. Its totient is φ = 1616824800.

The previous prime is 2645310289. The next prime is 2645310361. The reversal of 2645310321 is 1230135462.

2645310321 is a `hidden beast` number, since 2 + 645 + 3 + 10 + 3 + 2 + 1 = 666.

It is not a de Polignac number, because 2645310321 - 2⁵ = 2645310289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645310361) 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, 244210 + ... + 254811.

Almost surely, 2^2645310321 is an apocalyptic number.

It is an amenable number.

2645310321 is a deficient number, since it is larger than the sum of its proper divisors (1506552719).

2645310321 is a wasteful number, since it uses less digits than its factorization.

2645310321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499077 (or 499074 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2645310321 is about 51432.5803455358. The cubic root of 2645310321 is about 1383.0107063101.

Adding to 2645310321 its reverse (1230135462), we get a palindrome (3875445783).

The spelling of 2645310321 in words is "two billion, six hundred forty-five million, three hundred ten thousand, three hundred twenty-one".