103313261 has 2 divisors, whose sum is σ = 103313262. Its totient is φ = 103313260.

The previous prime is 103313227. The next prime is 103313269. The reversal of 103313261 is 162313301.

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., 96157636 + 7155625 = 9806^2 + 2675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103313261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103313269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51656630 + 51656631.

It is an arithmetic number, because the mean of its divisors is an integer number (51656631).

Almost surely, 2^103313261 is an apocalyptic number.

It is an amenable number.

103313261 is a deficient number, since it is larger than the sum of its proper divisors (1).

103313261 is an equidigital number, since it uses as much as digits as its factorization.

103313261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 103313261 is about 10164.3131100926. The cubic root of 103313261 is about 469.2295525827.

Adding to 103313261 its reverse (162313301), we get a palindrome (265626562).

The spelling of 103313261 in words is "one hundred three million, three hundred thirteen thousand, two hundred sixty-one".