3221431031 has 32 divisors (see below), whose sum is σ = 4211948160. Its totient is φ = 2390962176.

The previous prime is 3221430907. The next prime is 3221431063. The reversal of 3221431031 is 1301341223.

It is a cyclic number.

It is not a de Polignac number, because 3221431031 - 2¹⁸ = 3221168887 is a prime.

It is a super-2 number, since 2×3221431031² = 20755235774979445922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3221430994 and 3221431012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221431091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 487115 + ... + 493683.

It is an arithmetic number, because the mean of its divisors is an integer number (131623380).

Almost surely, 2^3221431031 is an apocalyptic number.

3221431031 is a deficient number, since it is larger than the sum of its proper divisors (990517129).

3221431031 is a wasteful number, since it uses less digits than its factorization.

3221431031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6923.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 3221431031 is about 56757.6517396553. The cubic root of 3221431031 is about 1476.8949741405.

Adding to 3221431031 its reverse (1301341223), we get a palindrome (4522772254).

The spelling of 3221431031 in words is "three billion, two hundred twenty-one million, four hundred thirty-one thousand, thirty-one".