11321147 has 2 divisors, whose sum is σ = 11321148. Its totient is φ = 11321146.

The previous prime is 11321137. The next prime is 11321153. The reversal of 11321147 is 74112311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11321147 - 2¹² = 11317051 is a prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (11321137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660573 + 5660574.

It is an arithmetic number, because the mean of its divisors is an integer number (5660574).

Almost surely, 2^11321147 is an apocalyptic number.

11321147 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321147 is an equidigital number, since it uses as much as digits as its factorization.

11321147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 20.

The square root of 11321147 is about 3364.6912191165. The cubic root of 11321147 is about 224.5415984014.

Adding to 11321147 its reverse (74112311), we get a palindrome (85433458).

The spelling of 11321147 in words is "eleven million, three hundred twenty-one thousand, one hundred forty-seven".