3420321431161 has 2 divisors, whose sum is σ = 3420321431162. Its totient is φ = 3420321431160.

The previous prime is 3420321431159. The next prime is 3420321431207. The reversal of 3420321431161 is 1611341230243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3351700485225 + 68620945936 = 1830765^2 + 261956^2 .

It is an emirp because it is prime and its reverse (1611341230243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3420321431161 - 2¹ = 3420321431159 is a prime.

Together with 3420321431159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3420321431101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710160715580 + 1710160715581.

It is an arithmetic number, because the mean of its divisors is an integer number (1710160715581).

Almost surely, 2^{3420321431161} is an apocalyptic number.

It is an amenable number.

3420321431161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3420321431161 is an equidigital number, since it uses as much as digits as its factorization.

3420321431161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 3420321431161 in words is "three trillion, four hundred twenty billion, three hundred twenty-one million, four hundred thirty-one thousand, one hundred sixty-one".