2631873 has 4 divisors (see below), whose sum is σ = 3509168. Its totient is φ = 1754580.

The previous prime is 2631851. The next prime is 2631887. The reversal of 2631873 is 3781362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-2631873 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

2631873 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2631873.

It is not an unprimeable number, because it can be changed into a prime (2631833) 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 in 3 ways as a sum of consecutive naturals, for example, 438643 + ... + 438648.

It is an arithmetic number, because the mean of its divisors is an integer number (877292).

2^2631873 is an apocalyptic number.

It is an amenable number.

2631873 is a deficient number, since it is larger than the sum of its proper divisors (877295).

2631873 is an equidigital number, since it uses as much as digits as its factorization.

2631873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877294.

The product of its digits is 6048, while the sum is 30.

The square root of 2631873 is about 1622.3048418839. The cubic root of 2631873 is about 138.0664980921.

The spelling of 2631873 in words is "two million, six hundred thirty-one thousand, eight hundred seventy-three".