3216139 has 2 divisors, whose sum is σ = 3216140. Its totient is φ = 3216138.

The previous prime is 3216137. The next prime is 3216197. The reversal of 3216139 is 9316123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3216139 - 2¹ = 3216137 is a prime.

Together with 3216137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3216131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608069 + 1608070.

It is an arithmetic number, because the mean of its divisors is an integer number (1608070).

Almost surely, 2^3216139 is an apocalyptic number.

3216139 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216139 is an equidigital number, since it uses as much as digits as its factorization.

3216139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 25.

The square root of 3216139 is about 1793.3596962127. The cubic root of 3216139 is about 147.6085803968.

The spelling of 3216139 in words is "three million, two hundred sixteen thousand, one hundred thirty-nine".