123210313 has 2 divisors, whose sum is σ = 123210314. Its totient is φ = 123210312.

The previous prime is 123210293. The next prime is 123210317. The reversal of 123210313 is 313012321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96294969 + 26915344 = 9813^2 + 5188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123210313 is a prime.

It is not a weakly prime, because it can be changed into another prime (123210317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61605156 + 61605157.

It is an arithmetic number, because the mean of its divisors is an integer number (61605157).

Almost surely, 2^123210313 is an apocalyptic number.

It is an amenable number.

123210313 is a deficient number, since it is larger than the sum of its proper divisors (1).

123210313 is an equidigital number, since it uses as much as digits as its factorization.

123210313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 123210313 is about 11100.0140990901. The cubic root of 123210313 is about 497.6022708361.

Adding to 123210313 its reverse (313012321), we get a palindrome (436222634).

The spelling of 123210313 in words is "one hundred twenty-three million, two hundred ten thousand, three hundred thirteen".