2815331 has 2 divisors, whose sum is σ = 2815332. Its totient is φ = 2815330.

The previous prime is 2815313. The next prime is 2815343. The reversal of 2815331 is 1335182.

Together with previous prime (2815313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2815331 is a prime.

It is a super-2 number, since 2×2815331² = 15852177279122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2815297 and 2815306.

It is not a weakly prime, because it can be changed into another prime (2815301) 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, 1407665 + 1407666.

It is an arithmetic number, because the mean of its divisors is an integer number (1407666).

2^2815331 is an apocalyptic number.

2815331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2815331 is an equidigital number, since it uses as much as digits as its factorization.

2815331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 2815331 is about 1677.8948119593. The cubic root of 2815331 is about 141.2027497478.

The spelling of 2815331 in words is "two million, eight hundred fifteen thousand, three hundred thirty-one".