23311243242 has 72 divisors (see below), whose sum is σ = 58791263076. Its totient is φ = 6656114304.

The previous prime is 23311243129. The next prime is 23311243247. The reversal of 23311243242 is 24234211332.

23311243242 is a `hidden beast` number, since 2 + 3 + 311 + 24 + 324 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15565307121 + 7745936121 = 124761^2 + 88011^2 .

It is a super-2 number, since 2×23311243242² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23311243247) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1538608 + ... + 1553684.

Almost surely, 2^23311243242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23311243242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29395631538).

23311243242 is an abundant number, since it is smaller than the sum of its proper divisors (35480019834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23311243242 is a wasteful number, since it uses less digits than its factorization.

23311243242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16852 (or 16842 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 23311243242 its reverse (24234211332), we get a palindrome (47545454574).

The spelling of 23311243242 in words is "twenty-three billion, three hundred eleven million, two hundred forty-three thousand, two hundred forty-two".