3213239 has 2 divisors, whose sum is σ = 3213240. Its totient is φ = 3213238.

The previous prime is 3213233. The next prime is 3213269. The reversal of 3213239 is 9323123.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3213239 is a prime.

It is a super-2 number, since 2×3213239² = 20649809742242, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3213233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606619 + 1606620.

It is an arithmetic number, because the mean of its divisors is an integer number (1606620).

Almost surely, 2^3213239 is an apocalyptic number.

3213239 is a deficient number, since it is larger than the sum of its proper divisors (1).

3213239 is an equidigital number, since it uses as much as digits as its factorization.

3213239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 23.

The square root of 3213239 is about 1792.5509755653. The cubic root of 3213239 is about 147.5642007219.

The spelling of 3213239 in words is "three million, two hundred thirteen thousand, two hundred thirty-nine".