2160031 has 2 divisors, whose sum is σ = 2160032. Its totient is φ = 2160030.

The previous prime is 2160029. The next prime is 2160061. The reversal of 2160031 is 1300612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2160031 - 2¹ = 2160029 is a prime.

It is a super-2 number, since 2×2160031² = 9331467841922, which contains 22 as substring.

Together with 2160029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2159993 and 2160020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2160001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080015 + 1080016.

It is an arithmetic number, because the mean of its divisors is an integer number (1080016).

2^2160031 is an apocalyptic number.

2160031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160031 is an equidigital number, since it uses as much as digits as its factorization.

2160031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2160031 is about 1469.7043920462. The cubic root of 2160031 is about 129.2666998015.

Adding to 2160031 its reverse (1300612), we get a palindrome (3460643).

The spelling of 2160031 in words is "two million, one hundred sixty thousand, thirty-one".