2387631 has 4 divisors (see below), whose sum is σ = 3183512. Its totient is φ = 1591752.

The previous prime is 2387629. The next prime is 2387687. The reversal of 2387631 is 1367832.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2387631 - 2¹ = 2387629 is a prime.

It is a super-2 number, since 2×2387631² = 11401563584322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2387621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397936 + ... + 397941.

It is an arithmetic number, because the mean of its divisors is an integer number (795878).

2^2387631 is an apocalyptic number.

2387631 is a deficient number, since it is larger than the sum of its proper divisors (795881).

2387631 is an equidigital number, since it uses as much as digits as its factorization.

2387631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795880.

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

The square root of 2387631 is about 1545.1961040593. The cubic root of 2387631 is about 133.6561877456.

The spelling of 2387631 in words is "two million, three hundred eighty-seven thousand, six hundred thirty-one".