103321261 has 2 divisors, whose sum is σ = 103321262. Its totient is φ = 103321260.

The previous prime is 103321249. The next prime is 103321289. The reversal of 103321261 is 162123301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72352036 + 30969225 = 8506^2 + 5565^2 .

It is an emirp because it is prime and its reverse (162123301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103321261 - 2⁷ = 103321133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103321201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51660630 + 51660631.

It is an arithmetic number, because the mean of its divisors is an integer number (51660631).

Almost surely, 2^103321261 is an apocalyptic number.

It is an amenable number.

103321261 is a deficient number, since it is larger than the sum of its proper divisors (1).

103321261 is an equidigital number, since it uses as much as digits as its factorization.

103321261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 103321261 is about 10164.7066361996. The cubic root of 103321261 is about 469.2416637724.

Adding to 103321261 its reverse (162123301), we get a palindrome (265444562).

The spelling of 103321261 in words is "one hundred three million, three hundred twenty-one thousand, two hundred sixty-one".