2689031 has 2 divisors, whose sum is σ = 2689032. Its totient is φ = 2689030.

The previous prime is 2689019. The next prime is 2689073. The reversal of 2689031 is 1309862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2689031 - 2¹⁸ = 2426887 is a prime.

It is a super-2 number, since 2×2689031² = 14461775437922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2688985 and 2689003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2689931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344515 + 1344516.

It is an arithmetic number, because the mean of its divisors is an integer number (1344516).

2^2689031 is an apocalyptic number.

2689031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689031 is an equidigital number, since it uses as much as digits as its factorization.

2689031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2689031 is about 1639.8265152143. The cubic root of 2689031 is about 139.0588402269.

The spelling of 2689031 in words is "two million, six hundred eighty-nine thousand, thirty-one".