103343021 has 2 divisors, whose sum is σ = 103343022. Its totient is φ = 103343020.

The previous prime is 103342999. The next prime is 103343027. The reversal of 103343021 is 120343301.

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., 97515625 + 5827396 = 9875^2 + 2414^2 .

It is a cyclic number.

It is not a de Polignac number, because 103343021 - 2¹⁴ = 103326637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103343027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51671510 + 51671511.

It is an arithmetic number, because the mean of its divisors is an integer number (51671511).

Almost surely, 2^103343021 is an apocalyptic number.

It is an amenable number.

103343021 is a deficient number, since it is larger than the sum of its proper divisors (1).

103343021 is an equidigital number, since it uses as much as digits as its factorization.

103343021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 103343021 is about 10165.7769501401. The cubic root of 103343021 is about 469.2746030461.

Adding to 103343021 its reverse (120343301), we get a palindrome (223686322).

The spelling of 103343021 in words is "one hundred three million, three hundred forty-three thousand, twenty-one".