3121230313 has 2 divisors, whose sum is σ = 3121230314. Its totient is φ = 3121230312.

The previous prime is 3121230269. The next prime is 3121230317. The reversal of 3121230313 is 3130321213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2632510864 + 488719449 = 51308^2 + 22107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121230313 is a prime.

It is not a weakly prime, because it can be changed into another prime (3121230317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560615156 + 1560615157.

It is an arithmetic number, because the mean of its divisors is an integer number (1560615157).

Almost surely, 2^3121230313 is an apocalyptic number.

It is an amenable number.

3121230313 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121230313 is an equidigital number, since it uses as much as digits as its factorization.

3121230313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 3121230313 is about 55867.9721575788. The cubic root of 3121230313 is about 1461.4207588756.

Adding to 3121230313 its reverse (3130321213), we get a palindrome (6251551526).

The spelling of 3121230313 in words is "three billion, one hundred twenty-one million, two hundred thirty thousand, three hundred thirteen".