23531500135235 has 4 divisors (see below), whose sum is σ = 28237800162288. Its totient is φ = 18825200108184.

The previous prime is 23531500135229. The next prime is 23531500135271. The reversal of 23531500135235 is 53253100513532.

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 23531500135235 - 2¹⁶ = 23531500069699 is a prime.

It is a super-2 number, since 2×23531500135235² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2353150013519 + ... + 2353150013528.

It is an arithmetic number, because the mean of its divisors is an integer number (7059450040572).

Almost surely, 2^{23531500135235} is an apocalyptic number.

23531500135235 is a deficient number, since it is larger than the sum of its proper divisors (4706300027053).

23531500135235 is an equidigital number, since it uses as much as digits as its factorization.

23531500135235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706300027052.

The product of its (nonzero) digits is 202500, while the sum is 38.

Adding to 23531500135235 its reverse (53253100513532), we get a palindrome (76784600648767).

The spelling of 23531500135235 in words is "twenty-three trillion, five hundred thirty-one billion, five hundred million, one hundred thirty-five thousand, two hundred thirty-five".