3121007 has 2 divisors, whose sum is σ = 3121008. Its totient is φ = 3121006.

The previous prime is 3120991. The next prime is 3121033. The reversal of 3121007 is 7001213.

It is a weak prime.

It is an emirp because it is prime and its reverse (7001213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3121007 - 2⁴ = 3120991 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3120982 and 3121000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560503 + 1560504.

It is an arithmetic number, because the mean of its divisors is an integer number (1560504).

Almost surely, 2^3121007 is an apocalyptic number.

3121007 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121007 is an equidigital number, since it uses as much as digits as its factorization.

3121007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 3121007 is about 1766.6372010121. The cubic root of 3121007 is about 146.1385904881.

The spelling of 3121007 in words is "three million, one hundred twenty-one thousand, seven".