2631919 has 2 divisors, whose sum is σ = 2631920. Its totient is φ = 2631918.

The previous prime is 2631917. The next prime is 2631929. The reversal of 2631919 is 9191362.

2631919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2631919 - 2¹ = 2631917 is a prime.

It is a super-2 number, since 2×2631919² = 13853995245122, which contains 22 as substring.

Together with 2631917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2631917) 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, 1315959 + 1315960.

It is an arithmetic number, because the mean of its divisors is an integer number (1315960).

2^2631919 is an apocalyptic number.

2631919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2631919 is an equidigital number, since it uses as much as digits as its factorization.

2631919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 31.

The square root of 2631919 is about 1622.3190191821. The cubic root of 2631919 is about 138.0673024650.

The spelling of 2631919 in words is "two million, six hundred thirty-one thousand, nine hundred nineteen".