13016320321 has 2 divisors, whose sum is σ = 13016320322. Its totient is φ = 13016320320.

The previous prime is 13016320313. The next prime is 13016320349. The reversal of 13016320321 is 12302361031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9241938225 + 3774382096 = 96135^2 + 61436^2 .

It is a cyclic number.

It is not a de Polignac number, because 13016320321 - 2³ = 13016320313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13016320292 and 13016320301.

It is not a weakly prime, because it can be changed into another prime (13016320301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6508160160 + 6508160161.

It is an arithmetic number, because the mean of its divisors is an integer number (6508160161).

Almost surely, 2^13016320321 is an apocalyptic number.

It is an amenable number.

13016320321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13016320321 is an equidigital number, since it uses as much as digits as its factorization.

13016320321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13016320321 its reverse (12302361031), we get a palindrome (25318681352).

The spelling of 13016320321 in words is "thirteen billion, sixteen million, three hundred twenty thousand, three hundred twenty-one".