3103421 has 2 divisors, whose sum is σ = 3103422. Its totient is φ = 3103420.

The previous prime is 3103417. The next prime is 3103423. The reversal of 3103421 is 1243013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2839225 + 264196 = 1685^2 + 514^2 .

It is an emirp because it is prime and its reverse (1243013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3103421 - 2² = 3103417 is a prime.

Together with 3103423, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3103396 and 3103405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3103423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1551710 + 1551711.

It is an arithmetic number, because the mean of its divisors is an integer number (1551711).

Almost surely, 2^3103421 is an apocalyptic number.

It is an amenable number.

3103421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3103421 is an equidigital number, since it uses as much as digits as its factorization.

3103421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3103421 is about 1761.6529170072. The cubic root of 3103421 is about 145.8635899851.

Adding to 3103421 its reverse (1243013), we get a palindrome (4346434).

The spelling of 3103421 in words is "three million, one hundred three thousand, four hundred twenty-one".