3216111389 has 2 divisors, whose sum is σ = 3216111390. Its totient is φ = 3216111388.

The previous prime is 3216111383. The next prime is 3216111403. The reversal of 3216111389 is 9831116123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2587756900 + 628354489 = 50870^2 + 25067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3216111389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3216111383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608055694 + 1608055695.

It is an arithmetic number, because the mean of its divisors is an integer number (1608055695).

Almost surely, 2^3216111389 is an apocalyptic number.

It is an amenable number.

3216111389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216111389 is an equidigital number, since it uses as much as digits as its factorization.

3216111389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 3216111389 is about 56710.7696033126. The cubic root of 3216111389 is about 1476.0815798225.

The spelling of 3216111389 in words is "three billion, two hundred sixteen million, one hundred eleven thousand, three hundred eighty-nine".