23513212105235 has 4 divisors (see below), whose sum is σ = 28215854526288. Its totient is φ = 18810569684184.

The previous prime is 23513212105231. The next prime is 23513212105283. The reversal of 23513212105235 is 53250121231532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23513212105235 - 2² = 23513212105231 is a prime.

It is a super-2 number, since 2×23513212105235² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23513212105195 and 23513212105204.

It is not an unprimeable number, because it can be changed into a prime (23513212105231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2351321210519 + ... + 2351321210528.

It is an arithmetic number, because the mean of its divisors is an integer number (7053963631572).

Almost surely, 2^{23513212105235} is an apocalyptic number.

23513212105235 is a deficient number, since it is larger than the sum of its proper divisors (4702642421053).

23513212105235 is an equidigital number, since it uses as much as digits as its factorization.

23513212105235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4702642421052.

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 23513212105235 its reverse (53250121231532), we get a palindrome (76763333336767).

The spelling of 23513212105235 in words is "twenty-three trillion, five hundred thirteen billion, two hundred twelve million, one hundred five thousand, two hundred thirty-five".