3220431 has 8 divisors (see below), whose sum is σ = 4306224. Its totient is φ = 2140800.

The previous prime is 3220423. The next prime is 3220433. The reversal of 3220431 is 1340223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3220431 - 2³ = 3220423 is a prime.

It is a super-2 number, since 2×3220431² = 20742351651522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3220431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136 + ... + 2541.

It is an arithmetic number, because the mean of its divisors is an integer number (538278).

Almost surely, 2^3220431 is an apocalyptic number.

3220431 is a deficient number, since it is larger than the sum of its proper divisors (1085793).

3220431 is a wasteful number, since it uses less digits than its factorization.

3220431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 3220431 is about 1794.5559339291. Note that the first 3 decimals coincide. The cubic root of 3220431 is about 147.6742133824.

Adding to 3220431 its reverse (1340223), we get a palindrome (4560654).

The spelling of 3220431 in words is "three million, two hundred twenty thousand, four hundred thirty-one".