3221430431 has 16 divisors (see below), whose sum is σ = 3332031360. Its totient is φ = 3112750080.

The previous prime is 3221430427. The next prime is 3221430491. The reversal of 3221430431 is 1340341223.

It is a cyclic number.

It is not a de Polignac number, because 3221430431 - 2² = 3221430427 is a prime.

It is a super-2 number, since 2×3221430431² = 20755228043545691522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3221430397 and 3221430406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221430491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3012965 + ... + 3014033.

It is an arithmetic number, because the mean of its divisors is an integer number (208251960).

Almost surely, 2^3221430431 is an apocalyptic number.

3221430431 is a deficient number, since it is larger than the sum of its proper divisors (110600929).

3221430431 is a wasteful number, since it uses less digits than its factorization.

3221430431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 3221430431 is about 56757.6464540241. The cubic root of 3221430431 is about 1476.8948824486.

Adding to 3221430431 its reverse (1340341223), we get a palindrome (4561771654).

The spelling of 3221430431 in words is "three billion, two hundred twenty-one million, four hundred thirty thousand, four hundred thirty-one".