103311421 has 2 divisors, whose sum is σ = 103311422. Its totient is φ = 103311420.

The previous prime is 103311407. The next prime is 103311443. The reversal of 103311421 is 124113301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76125625 + 27185796 = 8725^2 + 5214^2 .

It is a cyclic number.

It is not a de Polignac number, because 103311421 - 2⁷ = 103311293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103311395 and 103311404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103311821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51655710 + 51655711.

It is an arithmetic number, because the mean of its divisors is an integer number (51655711).

Almost surely, 2^103311421 is an apocalyptic number.

It is an amenable number.

103311421 is a deficient number, since it is larger than the sum of its proper divisors (1).

103311421 is an equidigital number, since it uses as much as digits as its factorization.

103311421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 103311421 is about 10164.2225969328. Note that the first 3 decimals coincide. The cubic root of 103311421 is about 469.2267669206.

Adding to 103311421 its reverse (124113301), we get a palindrome (227424722).

The spelling of 103311421 in words is "one hundred three million, three hundred eleven thousand, four hundred twenty-one".