2478631 has 2 divisors, whose sum is σ = 2478632. Its totient is φ = 2478630.

The previous prime is 2478611. The next prime is 2478643. The reversal of 2478631 is 1368742.

2478631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2478631 - 2¹¹ = 2476583 is a prime.

It is a super-2 number, since 2×2478631² = 12287223268322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2478593 and 2478602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2478611) 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, 1239315 + 1239316.

It is an arithmetic number, because the mean of its divisors is an integer number (1239316).

2^2478631 is an apocalyptic number.

2478631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478631 is an equidigital number, since it uses as much as digits as its factorization.

2478631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 2478631 is about 1574.3668568666. The cubic root of 2478631 is about 135.3330778601. Note that the first 3 decimals are identical.

The spelling of 2478631 in words is "two million, four hundred seventy-eight thousand, six hundred thirty-one".