3134821 has 2 divisors, whose sum is σ = 3134822. Its totient is φ = 3134820.

The previous prime is 3134801. The next prime is 3134837. The reversal of 3134821 is 1284313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1718721 + 1416100 = 1311^2 + 1190^2 .

It is an emirp because it is prime and its reverse (1284313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3134821 - 2⁹ = 3134309 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3134792 and 3134801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3134801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1567410 + 1567411.

It is an arithmetic number, because the mean of its divisors is an integer number (1567411).

Almost surely, 2^3134821 is an apocalyptic number.

It is an amenable number.

3134821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3134821 is an equidigital number, since it uses as much as digits as its factorization.

3134821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 3134821 is about 1770.5425722077. The cubic root of 3134821 is about 146.3538828983.

The spelling of 3134821 in words is "three million, one hundred thirty-four thousand, eight hundred twenty-one".