13315025321 has 8 divisors (see below), whose sum is σ = 14385074760. Its totient is φ = 12251521152.

The previous prime is 13315025291. The next prime is 13315025327. The reversal of 13315025321 is 12352051331.

It can be written as a sum of positive squares in 4 ways, for example, as 150675625 + 13164349696 = 12275^2 + 114736^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13315025321 - 2¹⁴ = 13315008937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13315025327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1632086 + ... + 1640223.

It is an arithmetic number, because the mean of its divisors is an integer number (1798134345).

Almost surely, 2^13315025321 is an apocalyptic number.

It is an amenable number.

13315025321 is a deficient number, since it is larger than the sum of its proper divisors (1070049439).

13315025321 is a wasteful number, since it uses less digits than its factorization.

13315025321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3272635.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 13315025321 its reverse (12352051331), we get a palindrome (25667076652).

The spelling of 13315025321 in words is "thirteen billion, three hundred fifteen million, twenty-five thousand, three hundred twenty-one".