2623391 has 2 divisors, whose sum is σ = 2623392. Its totient is φ = 2623390.

The previous prime is 2623373. The next prime is 2623409. The reversal of 2623391 is 1933262.

2623391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2623373) and next prime (2623409).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2623391 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2623391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2623331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1311695 + 1311696.

It is an arithmetic number, because the mean of its divisors is an integer number (1311696).

2^2623391 is an apocalyptic number.

2623391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2623391 is an equidigital number, since it uses as much as digits as its factorization.

2623391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 26.

The square root of 2623391 is about 1619.6885503084. The cubic root of 2623391 is about 137.9180182394.

The spelling of 2623391 in words is "two million, six hundred twenty-three thousand, three hundred ninety-one".