3220831 has 2 divisors, whose sum is σ = 3220832. Its totient is φ = 3220830.

The previous prime is 3220817. The next prime is 3220849. The reversal of 3220831 is 1380223.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3220831 - 2⁵ = 3220799 is a prime.

It is a super-2 number, since 2×3220831² = 20747504661122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3220799 and 3220808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3220801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610415 + 1610416.

It is an arithmetic number, because the mean of its divisors is an integer number (1610416).

Almost surely, 2^3220831 is an apocalyptic number.

3220831 is a deficient number, since it is larger than the sum of its proper divisors (1).

3220831 is an equidigital number, since it uses as much as digits as its factorization.

3220831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3220831 is about 1794.6673786527. The cubic root of 3220831 is about 147.6803271852.

The spelling of 3220831 in words is "three million, two hundred twenty thousand, eight hundred thirty-one".