321069381109 has 2 divisors, whose sum is σ = 321069381110. Its totient is φ = 321069381108.

The previous prime is 321069381067. The next prime is 321069381133. The reversal of 321069381109 is 901183960123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315900202500 + 5169178609 = 562050^2 + 71897^2 .

It is a cyclic number.

It is not a de Polignac number, because 321069381109 - 2⁷ = 321069380981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321069331109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160534690554 + 160534690555.

It is an arithmetic number, because the mean of its divisors is an integer number (160534690555).

Almost surely, 2^321069381109 is an apocalyptic number.

It is an amenable number.

321069381109 is a deficient number, since it is larger than the sum of its proper divisors (1).

321069381109 is an equidigital number, since it uses as much as digits as its factorization.

321069381109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 321069381109 in words is "three hundred twenty-one billion, sixty-nine million, three hundred eighty-one thousand, one hundred nine".