23131134421117 has 2 divisors, whose sum is σ = 23131134421118. Its totient is φ = 23131134421116.

The previous prime is 23131134421007. The next prime is 23131134421127. The reversal of 23131134421117 is 71112443113132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17870116017636 + 5261018403481 = 4227306^2 + 2293691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23131134421117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23131134421127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565567210558 + 11565567210559.

It is an arithmetic number, because the mean of its divisors is an integer number (11565567210559).

Almost surely, 2^{23131134421117} is an apocalyptic number.

It is an amenable number.

23131134421117 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131134421117 is an equidigital number, since it uses as much as digits as its factorization.

23131134421117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

Adding to 23131134421117 its reverse (71112443113132), we get a palindrome (94243577534249).

The spelling of 23131134421117 in words is "twenty-three trillion, one hundred thirty-one billion, one hundred thirty-four million, four hundred twenty-one thousand, one hundred seventeen".