23505241143 has 4 divisors (see below), whose sum is σ = 31340321528. Its totient is φ = 15670160760.

The previous prime is 23505241139. The next prime is 23505241171. The reversal of 23505241143 is 34114250532.

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

It is not a de Polignac number, because 23505241143 - 2² = 23505241139 is a prime.

It is a super-2 number, since 2×23505241143² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23505241143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23505241343) 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, 3917540188 + ... + 3917540193.

It is an arithmetic number, because the mean of its divisors is an integer number (7835080382).

Almost surely, 2^23505241143 is an apocalyptic number.

23505241143 is a deficient number, since it is larger than the sum of its proper divisors (7835080385).

23505241143 is an equidigital number, since it uses as much as digits as its factorization.

23505241143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7835080384.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 23505241143 its reverse (34114250532), we get a palindrome (57619491675).

The spelling of 23505241143 in words is "twenty-three billion, five hundred five million, two hundred forty-one thousand, one hundred forty-three".