3231666443 has 2 divisors, whose sum is σ = 3231666444. Its totient is φ = 3231666442.

The previous prime is 3231666377. The next prime is 3231666481. The reversal of 3231666443 is 3446661323.

It is an a-pointer prime, because the next prime (3231666481) can be obtained adding 3231666443 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3231666443 - 2²⁰ = 3230617867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3231666397 and 3231666406.

It is not a weakly prime, because it can be changed into another prime (3231666343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1615833221 + 1615833222.

It is an arithmetic number, because the mean of its divisors is an integer number (1615833222).

Almost surely, 2^3231666443 is an apocalyptic number.

3231666443 is a deficient number, since it is larger than the sum of its proper divisors (1).

3231666443 is an equidigital number, since it uses as much as digits as its factorization.

3231666443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 38.

The square root of 3231666443 is about 56847.7479149350. The cubic root of 3231666443 is about 1478.4574936791.

The spelling of 3231666443 in words is "three billion, two hundred thirty-one million, six hundred sixty-six thousand, four hundred forty-three".