13121401313 has 2 divisors, whose sum is σ = 13121401314. Its totient is φ = 13121401312.

The previous prime is 13121401283. The next prime is 13121401327. The reversal of 13121401313 is 31310412131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7634740129 + 5486661184 = 87377^2 + 74072^2 .

It is a cyclic number.

It is not a de Polignac number, because 13121401313 - 2¹⁰ = 13121400289 is a prime.

It is not a weakly prime, because it can be changed into another prime (13121401373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560700656 + 6560700657.

It is an arithmetic number, because the mean of its divisors is an integer number (6560700657).

Almost surely, 2^13121401313 is an apocalyptic number.

It is an amenable number.

13121401313 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121401313 is an equidigital number, since it uses as much as digits as its factorization.

13121401313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 13121401313 its reverse (31310412131), we get a palindrome (44431813444).

The spelling of 13121401313 in words is "thirteen billion, one hundred twenty-one million, four hundred one thousand, three hundred thirteen".