2309628321 has 48 divisors (see below), whose sum is σ = 4479296640. Its totient is φ = 1107509760.

The previous prime is 2309628271. The next prime is 2309628361. The reversal of 2309628321 is 1238269032.

2309628321 is a `hidden beast` number, since 2 + 3 + 0 + 9 + 628 + 3 + 21 = 666.

It is not a de Polignac number, because 2309628321 - 2⁶ = 2309628257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2309628361) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119176 + ... + 137193.

It is an arithmetic number, because the mean of its divisors is an integer number (93318680).

Almost surely, 2^2309628321 is an apocalyptic number.

2309628321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2309628321 is a deficient number, since it is larger than the sum of its proper divisors (2169668319).

2309628321 is a wasteful number, since it uses less digits than its factorization.

2309628321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256406 (or 256403 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 2309628321 is about 48058.5925823884. The cubic root of 2309628321 is about 1321.8455056981.

The spelling of 2309628321 in words is "two billion, three hundred nine million, six hundred twenty-eight thousand, three hundred twenty-one".