123313010251 has 2 divisors, whose sum is σ = 123313010252. Its totient is φ = 123313010250.

The previous prime is 123313010207. The next prime is 123313010281. The reversal of 123313010251 is 152010313321.

It is a strong prime.

It is an emirp because it is prime and its reverse (152010313321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123313010251 - 2⁷ = 123313010123 is a prime.

It is not a weakly prime, because it can be changed into another prime (123313010281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61656505125 + 61656505126.

It is an arithmetic number, because the mean of its divisors is an integer number (61656505126).

Almost surely, 2^123313010251 is an apocalyptic number.

123313010251 is a deficient number, since it is larger than the sum of its proper divisors (1).

123313010251 is an equidigital number, since it uses as much as digits as its factorization.

123313010251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 123313010251 its reverse (152010313321), we get a palindrome (275323323572).

The spelling of 123313010251 in words is "one hundred twenty-three billion, three hundred thirteen million, ten thousand, two hundred fifty-one".