23205510431113 has 2 divisors, whose sum is σ = 23205510431114. Its totient is φ = 23205510431112.

The previous prime is 23205510431093. The next prime is 23205510431161. The reversal of 23205510431113 is 31113401550232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15871363596544 + 7334146834569 = 3983888^2 + 2708163^2 .

It is a cyclic number.

It is not a de Polignac number, because 23205510431113 - 2⁹ = 23205510430601 is a prime.

It is a super-2 number, since 2×23205510431113² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23205510431713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11602755215556 + 11602755215557.

It is an arithmetic number, because the mean of its divisors is an integer number (11602755215557).

Almost surely, 2^{23205510431113} is an apocalyptic number.

It is an amenable number.

23205510431113 is a deficient number, since it is larger than the sum of its proper divisors (1).

23205510431113 is an equidigital number, since it uses as much as digits as its factorization.

23205510431113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 23205510431113 its reverse (31113401550232), we get a palindrome (54318911981345).

The spelling of 23205510431113 in words is "twenty-three trillion, two hundred five billion, five hundred ten million, four hundred thirty-one thousand, one hundred thirteen".