2731427 has 2 divisors, whose sum is σ = 2731428. Its totient is φ = 2731426.

The previous prime is 2731381. The next prime is 2731429. The reversal of 2731427 is 7241372.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2731427 - 2¹² = 2727331 is a prime.

Together with 2731429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2731396 and 2731405.

It is not a weakly prime, because it can be changed into another prime (2731429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365713 + 1365714.

It is an arithmetic number, because the mean of its divisors is an integer number (1365714).

2^2731427 is an apocalyptic number.

2731427 is a deficient number, since it is larger than the sum of its proper divisors (1).

2731427 is an equidigital number, since it uses as much as digits as its factorization.

2731427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 26.

The square root of 2731427 is about 1652.7029376146. The cubic root of 2731427 is about 139.7858460513.

Adding to 2731427 its reverse (7241372), we get a palindrome (9972799).

The spelling of 2731427 in words is "two million, seven hundred thirty-one thousand, four hundred twenty-seven".