668280810031 has 8 divisors (see below), whose sum is σ = 669065167584. Its totient is φ = 667496666880.

The previous prime is 668280810023. The next prime is 668280810037. The reversal of 668280810031 is 130018082866.

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 668280810031 - 2³ = 668280810023 is a prime.

It is a super-2 number, since 2×668280810031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 668280810031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668280810037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6675015 + ... + 6774391.

It is an arithmetic number, because the mean of its divisors is an integer number (83633145948).

Almost surely, 2^668280810031 is an apocalyptic number.

668280810031 is a deficient number, since it is larger than the sum of its proper divisors (784357553).

668280810031 is an equidigital number, since it uses as much as digits as its factorization.

668280810031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107201.

The product of its (nonzero) digits is 110592, while the sum is 43.

Adding to 668280810031 its reverse (130018082866), we get a palindrome (798298892897).

The spelling of 668280810031 in words is "six hundred sixty-eight billion, two hundred eighty million, eight hundred ten thousand, thirty-one".