2321147 has 2 divisors, whose sum is σ = 2321148. Its totient is φ = 2321146.

The previous prime is 2321117. The next prime is 2321149. The reversal of 2321147 is 7411232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2321147 is a prime.

Together with 2321149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2321149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160573 + 1160574.

It is an arithmetic number, because the mean of its divisors is an integer number (1160574).

2^2321147 is an apocalyptic number.

2321147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321147 is an equidigital number, since it uses as much as digits as its factorization.

2321147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 20.

The square root of 2321147 is about 1523.5310958428. The cubic root of 2321147 is about 132.4039317872.

Adding to 2321147 its reverse (7411232), we get a palindrome (9732379).

The spelling of 2321147 in words is "two million, three hundred twenty-one thousand, one hundred forty-seven".