23144311243 has 4 divisors (see below), whose sum is σ = 23147974440. Its totient is φ = 23140648048.

The previous prime is 23144311189. The next prime is 23144311247. The reversal of 23144311243 is 34211344132.

It is a happy number.

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 23144311243 - 2²¹ = 23142214091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23144311247) 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, 1822105 + ... + 1834762.

It is an arithmetic number, because the mean of its divisors is an integer number (5786993610).

Almost surely, 2^23144311243 is an apocalyptic number.

23144311243 is a deficient number, since it is larger than the sum of its proper divisors (3663197).

23144311243 is an equidigital number, since it uses as much as digits as its factorization.

23144311243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663196.

The product of its digits is 6912, while the sum is 28.

Adding to 23144311243 its reverse (34211344132), we get a palindrome (57355655375).

The spelling of 23144311243 in words is "twenty-three billion, one hundred forty-four million, three hundred eleven thousand, two hundred forty-three".