2164031 has 2 divisors, whose sum is σ = 2164032. Its totient is φ = 2164030.

The previous prime is 2164013. The next prime is 2164037. The reversal of 2164031 is 1304612.

Together with previous prime (2164013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2164031 is a prime.

It is a super-2 number, since 2×2164031² = 9366060337922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082015 + 1082016.

It is an arithmetic number, because the mean of its divisors is an integer number (1082016).

2^2164031 is an apocalyptic number.

2164031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164031 is an equidigital number, since it uses as much as digits as its factorization.

2164031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2164031 is about 1471.0645804994. The cubic root of 2164031 is about 129.3464437118.

Adding to 2164031 its reverse (1304612), we get a palindrome (3468643).

The spelling of 2164031 in words is "two million, one hundred sixty-four thousand, thirty-one".