23231121317 has 2 divisors, whose sum is σ = 23231121318. Its totient is φ = 23231121316.

The previous prime is 23231121313. The next prime is 23231121323. The reversal of 23231121317 is 71312113232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20337326881 + 2893794436 = 142609^2 + 53794^2 .

It is a cyclic number.

It is not a de Polignac number, because 23231121317 - 2² = 23231121313 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23231121313) 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, 11615560658 + 11615560659.

It is an arithmetic number, because the mean of its divisors is an integer number (11615560659).

Almost surely, 2^23231121317 is an apocalyptic number.

It is an amenable number.

23231121317 is a deficient number, since it is larger than the sum of its proper divisors (1).

23231121317 is an equidigital number, since it uses as much as digits as its factorization.

23231121317 is an odious number, because the sum of its binary digits is odd.

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

Adding to 23231121317 its reverse (71312113232), we get a palindrome (94543234549).

The spelling of 23231121317 in words is "twenty-three billion, two hundred thirty-one million, one hundred twenty-one thousand, three hundred seventeen".