2291347 has 2 divisors, whose sum is σ = 2291348. Its totient is φ = 2291346.

The previous prime is 2291327. The next prime is 2291351. The reversal of 2291347 is 7431922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2291347 is a prime.

It is an Ulam number.

2291347 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2291327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145673 + 1145674.

It is an arithmetic number, because the mean of its divisors is an integer number (1145674).

2^2291347 is an apocalyptic number.

2291347 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291347 is an equidigital number, since it uses as much as digits as its factorization.

2291347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 2291347 is about 1513.7195909415. The cubic root of 2291347 is about 131.8348677325.

The spelling of 2291347 in words is "two million, two hundred ninety-one thousand, three hundred forty-seven".