13341721 has 2 divisors, whose sum is σ = 13341722. Its totient is φ = 13341720.

The previous prime is 13341701. The next prime is 13341733. The reversal of 13341721 is 12714331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13286025 + 55696 = 3645^2 + 236^2 .

It is a cyclic number.

It is not a de Polignac number, because 13341721 - 2⁵ = 13341689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13341692 and 13341701.

It is not a weakly prime, because it can be changed into another prime (13341701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6670860 + 6670861.

It is an arithmetic number, because the mean of its divisors is an integer number (6670861).

Almost surely, 2^13341721 is an apocalyptic number.

It is an amenable number.

13341721 is a deficient number, since it is larger than the sum of its proper divisors (1).

13341721 is an equidigital number, since it uses as much as digits as its factorization.

13341721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 13341721 is about 3652.6320646898. The cubic root of 13341721 is about 237.1759332687.

The spelling of 13341721 in words is "thirteen million, three hundred forty-one thousand, seven hundred twenty-one".