3121273 has 2 divisors, whose sum is σ = 3121274. Its totient is φ = 3121272.

The previous prime is 3121267. The next prime is 3121291. The reversal of 3121273 is 3721213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2598544 + 522729 = 1612^2 + 723^2 .

It is an emirp because it is prime and its reverse (3721213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3121273.

It is not a weakly prime, because it can be changed into another prime (3121253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560636 + 1560637.

It is an arithmetic number, because the mean of its divisors is an integer number (1560637).

Almost surely, 2^3121273 is an apocalyptic number.

It is an amenable number.

3121273 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121273 is an equidigital number, since it uses as much as digits as its factorization.

3121273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 19.

The square root of 3121273 is about 1766.7124836826. The cubic root of 3121273 is about 146.1427421140.

Adding to 3121273 its reverse (3721213), we get a palindrome (6842486).

The spelling of 3121273 in words is "three million, one hundred twenty-one thousand, two hundred seventy-three".