3221431481 has 2 divisors, whose sum is σ = 3221431482. Its totient is φ = 3221431480.

The previous prime is 3221431469. The next prime is 3221431483. The reversal of 3221431481 is 1841341223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3120227881 + 101203600 = 55859^2 + 10060^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221431481 - 2⁶ = 3221431417 is a prime.

It is a super-2 number, since 2×3221431481² = 20755241573555706722, which contains 22 as substring.

Together with 3221431483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3221431483) 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 as a sum of consecutive naturals, namely, 1610715740 + 1610715741.

It is an arithmetic number, because the mean of its divisors is an integer number (1610715741).

Almost surely, 2^3221431481 is an apocalyptic number.

It is an amenable number.

3221431481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221431481 is an equidigital number, since it uses as much as digits as its factorization.

3221431481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 29.

The square root of 3221431481 is about 56757.6557038784. The cubic root of 3221431481 is about 1476.8950429094.

The spelling of 3221431481 in words is "three billion, two hundred twenty-one million, four hundred thirty-one thousand, four hundred eighty-one".