1668030031 has 8 divisors (see below), whose sum is σ = 1673722880. Its totient is φ = 1662347448.

The previous prime is 1668030029. The next prime is 1668030097. The reversal of 1668030031 is 1300308661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1668030031 - 2¹ = 1668030029 is a prime.

It is a super-2 number, since 2×1668030031² = 5564648368635721922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668030431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445690 + ... + 449416.

It is an arithmetic number, because the mean of its divisors is an integer number (209215360).

Almost surely, 2^1668030031 is an apocalyptic number.

1668030031 is a deficient number, since it is larger than the sum of its proper divisors (5692849).

1668030031 is an equidigital number, since it uses as much as digits as its factorization.

1668030031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1668030031 is about 40841.5233677687. The cubic root of 1668030031 is about 1185.9543028157.

Adding to 1668030031 its reverse (1300308661), we get a palindrome (2968338692).

The spelling of 1668030031 in words is "one billion, six hundred sixty-eight million, thirty thousand, thirty-one".