321162013 has 2 divisors, whose sum is σ = 321162014. Its totient is φ = 321162012.

The previous prime is 321162001. The next prime is 321162019. The reversal of 321162013 is 310261123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312653124 + 8508889 = 17682^2 + 2917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321162013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321162019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160581006 + 160581007.

It is an arithmetic number, because the mean of its divisors is an integer number (160581007).

Almost surely, 2^321162013 is an apocalyptic number.

It is an amenable number.

321162013 is a deficient number, since it is larger than the sum of its proper divisors (1).

321162013 is an equidigital number, since it uses as much as digits as its factorization.

321162013 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 19.

The square root of 321162013 is about 17920.9936387467. The cubic root of 321162013 is about 684.8173011615.

The spelling of 321162013 in words is "three hundred twenty-one million, one hundred sixty-two thousand, thirteen".