666000131 has 2 divisors, whose sum is σ = 666000132. Its totient is φ = 666000130.

The previous prime is 666000119. The next prime is 666000133. The reversal of 666000131 is 131000666.

666000131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666000131 - 2¹⁰ = 665999107 is a prime.

It is a super-2 number, since 2×666000131² = 887112348984034322, which contains 22 as substring.

Together with 666000133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 666000097 and 666000106.

It is not a weakly prime, because it can be changed into another prime (666000133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333000065 + 333000066.

It is an arithmetic number, because the mean of its divisors is an integer number (333000066).

Almost surely, 2^666000131 is an apocalyptic number.

666000131 is a deficient number, since it is larger than the sum of its proper divisors (1).

666000131 is an equidigital number, since it uses as much as digits as its factorization.

666000131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 666000131 is about 25806.9783392012. The cubic root of 666000131 is about 873.2892313873.

Adding to 666000131 its reverse (131000666), we get a palindrome (797000797).

The spelling of 666000131 in words is "six hundred sixty-six million, one hundred thirty-one", and thus it is an aban number.