3220031987 has 2 divisors, whose sum is σ = 3220031988. Its totient is φ = 3220031986.

The previous prime is 3220031981. The next prime is 3220031989. The reversal of 3220031987 is 7891300223.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3220031987 - 2⁶ = 3220031923 is a prime.

Together with 3220031989, 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 (3220031981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610015993 + 1610015994.

It is an arithmetic number, because the mean of its divisors is an integer number (1610015994).

Almost surely, 2^3220031987 is an apocalyptic number.

3220031987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3220031987 is an equidigital number, since it uses as much as digits as its factorization.

3220031987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 3220031987 is about 56745.3256841478. The cubic root of 3220031987 is about 1476.6811416106.

The spelling of 3220031987 in words is "three billion, two hundred twenty million, thirty-one thousand, nine hundred eighty-seven".