2478331 has 2 divisors, whose sum is σ = 2478332. Its totient is φ = 2478330.

The previous prime is 2478323. The next prime is 2478337. The reversal of 2478331 is 1338742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2478331 - 2³ = 2478323 is a prime.

It is a super-2 number, since 2×2478331² = 12284249091122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2478331.

It is not a weakly prime, because it can be changed into another prime (2478337) 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 as a sum of consecutive naturals, namely, 1239165 + 1239166.

It is an arithmetic number, because the mean of its divisors is an integer number (1239166).

2^2478331 is an apocalyptic number.

2478331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478331 is an equidigital number, since it uses as much as digits as its factorization.

2478331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 2478331 is about 1574.2715775876. The cubic root of 2478331 is about 135.3276176468.

It can be divided in two parts, 2478 and 331, that added together give a square (2809 = 53²).

The spelling of 2478331 in words is "two million, four hundred seventy-eight thousand, three hundred thirty-one".