30315001321 has 24 divisors (see below), whose sum is σ = 34001742600. Its totient is φ = 26998033920.

The previous prime is 30315001313. The next prime is 30315001361. The reversal of 30315001321 is 12310051303.

It can be written as a sum of positive squares in 4 ways, for example, as 24826414096 + 5488587225 = 157564^2 + 74085^2 .

It is not a de Polignac number, because 30315001321 - 2³ = 30315001313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30315001361) 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, 4697505 + ... + 4703953.

It is an arithmetic number, because the mean of its divisors is an integer number (1416739275).

Almost surely, 2^30315001321 is an apocalyptic number.

It is an amenable number.

30315001321 is a deficient number, since it is larger than the sum of its proper divisors (3686741279).

30315001321 is a wasteful number, since it uses less digits than its factorization.

30315001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7257 (or 7246 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 30315001321 its reverse (12310051303), we get a palindrome (42625052624).

The spelling of 30315001321 in words is "thirty billion, three hundred fifteen million, one thousand, three hundred twenty-one".