123212031317 has 2 divisors, whose sum is σ = 123212031318. Its totient is φ = 123212031316.

The previous prime is 123212031301. The next prime is 123212031323. The reversal of 123212031317 is 713130212321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108642092881 + 14569938436 = 329609^2 + 120706^2 .

It is a cyclic number.

It is not a de Polignac number, because 123212031317 - 2⁴ = 123212031301 is a prime.

It is a super-2 number, since 2×123212031317² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123212031347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61606015658 + 61606015659.

It is an arithmetic number, because the mean of its divisors is an integer number (61606015659).

Almost surely, 2^123212031317 is an apocalyptic number.

It is an amenable number.

123212031317 is a deficient number, since it is larger than the sum of its proper divisors (1).

123212031317 is an equidigital number, since it uses as much as digits as its factorization.

123212031317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 123212031317 its reverse (713130212321), we get a palindrome (836342243638).

The spelling of 123212031317 in words is "one hundred twenty-three billion, two hundred twelve million, thirty-one thousand, three hundred seventeen".