13240431441 has 6 divisors (see below), whose sum is σ = 19125067650. Its totient is φ = 8826954288.

The previous prime is 13240431439. The next prime is 13240431497. The reversal of 13240431441 is 14413404231.

It can be written as a sum of positive squares in only one way, i.e., 11733439041 + 1506992400 = 108321^2 + 38820^2 .

It is not a de Polignac number, because 13240431441 - 2¹ = 13240431439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13240431041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 735579516 + ... + 735579533.

It is an arithmetic number, because the mean of its divisors is an integer number (3187511275).

Almost surely, 2^13240431441 is an apocalyptic number.

It is an amenable number.

13240431441 is a deficient number, since it is larger than the sum of its proper divisors (5884636209).

13240431441 is a wasteful number, since it uses less digits than its factorization.

13240431441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471159055 (or 1471159052 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 13240431441 its reverse (14413404231), we get a palindrome (27653835672).

The spelling of 13240431441 in words is "thirteen billion, two hundred forty million, four hundred thirty-one thousand, four hundred forty-one".