23311421116657 has 2 divisors, whose sum is σ = 23311421116658. Its totient is φ = 23311421116656.

The previous prime is 23311421116639. The next prime is 23311421116667. The reversal of 23311421116657 is 75661112411332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13815464551056 + 9495956565601 = 3716916^2 + 3081551^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311421116657 - 2²⁷ = 23311286898929 is a prime.

It is not a weakly prime, because it can be changed into another prime (23311421116667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655710558328 + 11655710558329.

It is an arithmetic number, because the mean of its divisors is an integer number (11655710558329).

Almost surely, 2^{23311421116657} is an apocalyptic number.

It is an amenable number.

23311421116657 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311421116657 is an equidigital number, since it uses as much as digits as its factorization.

23311421116657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

Adding to 23311421116657 its reverse (75661112411332), we get a palindrome (98972533527989).

The spelling of 23311421116657 in words is "twenty-three trillion, three hundred eleven billion, four hundred twenty-one million, one hundred sixteen thousand, six hundred fifty-seven".