23117021835 has 16 divisors (see below), whose sum is σ = 36989571840. Its totient is φ = 12328299360.

The previous prime is 23117021833. The next prime is 23117021839. The reversal of 23117021835 is 53812071132.

It is a happy number.

It is not a de Polignac number, because 23117021835 - 2¹ = 23117021833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23117021796 and 23117021805.

It is not an unprimeable number, because it can be changed into a prime (23117021833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259626 + ... + 337104.

It is an arithmetic number, because the mean of its divisors is an integer number (2311848240).

Almost surely, 2^23117021835 is an apocalyptic number.

23117021835 is a deficient number, since it is larger than the sum of its proper divisors (13872550005).

23117021835 is a wasteful number, since it uses less digits than its factorization.

23117021835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97378.

The product of its (nonzero) digits is 10080, while the sum is 33.

Adding to 23117021835 its reverse (53812071132), we get a palindrome (76929092967).

The spelling of 23117021835 in words is "twenty-three billion, one hundred seventeen million, twenty-one thousand, eight hundred thirty-five".