123231030313 has 2 divisors, whose sum is σ = 123231030314. Its totient is φ = 123231030312.

The previous prime is 123231030277. The next prime is 123231030331. The reversal of 123231030313 is 313030132321.

Together with next prime (123231030331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123219954729 + 11075584 = 351027^2 + 3328^2 .

It is a cyclic number.

It is not a de Polignac number, because 123231030313 - 2²¹ = 123228933161 is a prime.

It is not a weakly prime, because it can be changed into another prime (123231030343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61615515156 + 61615515157.

It is an arithmetic number, because the mean of its divisors is an integer number (61615515157).

Almost surely, 2^123231030313 is an apocalyptic number.

It is an amenable number.

123231030313 is a deficient number, since it is larger than the sum of its proper divisors (1).

123231030313 is an equidigital number, since it uses as much as digits as its factorization.

123231030313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 123231030313 its reverse (313030132321), we get a palindrome (436261162634).

The spelling of 123231030313 in words is "one hundred twenty-three billion, two hundred thirty-one million, thirty thousand, three hundred thirteen".