13148321 has 2 divisors, whose sum is σ = 13148322. Its totient is φ = 13148320.

The previous prime is 13148287. The next prime is 13148329. The reversal of 13148321 is 12384131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12673600 + 474721 = 3560^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 13148321 - 2⁶ = 13148257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13148329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6574160 + 6574161.

It is an arithmetic number, because the mean of its divisors is an integer number (6574161).

Almost surely, 2^13148321 is an apocalyptic number.

It is an amenable number.

13148321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13148321 is an equidigital number, since it uses as much as digits as its factorization.

13148321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 13148321 is about 3626.0613618636. The cubic root of 13148321 is about 236.0243259900.

The spelling of 13148321 in words is "thirteen million, one hundred forty-eight thousand, three hundred twenty-one".