13240323444 has 24 divisors (see below), whose sum is σ = 30896244288. Its totient is φ = 4413133120.

The previous prime is 13240323443. The next prime is 13240323521. The reversal of 13240323444 is 44432304231.

It is a happy number.

It is a super-3 number, since 3×13240323444³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13240323443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199384 + ... + 257360.

It is an arithmetic number, because the mean of its divisors is an integer number (1287343512).

Almost surely, 2^13240323444 is an apocalyptic number.

It is an amenable number.

13240323444 is an abundant number, since it is smaller than the sum of its proper divisors (17655920844).

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

13240323444 is a wasteful number, since it uses less digits than its factorization.

13240323444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77015 (or 77013 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 13240323444 its reverse (44432304231), we get a palindrome (57672627675).

The spelling of 13240323444 in words is "thirteen billion, two hundred forty million, three hundred twenty-three thousand, four hundred forty-four".