911321 has 2 divisors, whose sum is σ = 911322. Its totient is φ = 911320.

The previous prime is 911311. The next prime is 911327. The reversal of 911321 is 123119.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855625 + 55696 = 925^2 + 236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-911321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 911321.

It is not a weakly prime, because it can be changed into another prime (911327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455660 + 455661.

It is an arithmetic number, because the mean of its divisors is an integer number (455661).

2⁹¹¹³²¹ is an apocalyptic number.

It is an amenable number.

911321 is a deficient number, since it is larger than the sum of its proper divisors (1).

911321 is an equidigital number, since it uses as much as digits as its factorization.

911321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54, while the sum is 17.

The square root of 911321 is about 954.6313424563. The cubic root of 911321 is about 96.9520789262.

The spelling of 911321 in words is "nine hundred eleven thousand, three hundred twenty-one".