11431213043405 has 8 divisors (see below), whose sum is σ = 13717473800184. Its totient is φ = 9144958336000.

The previous prime is 11431213043363. The next prime is 11431213043413. The reversal of 11431213043405 is 50434031213411.

It can be written as a sum of positive squares in 4 ways, for example, as 670543163689 + 10760669879716 = 818867^2 + 3280346^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11431213043405 - 2²⁶ = 11431145934541 is a prime.

It is a super-3 number, since 3×11431213043405³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6637565 + ... + 8180445.

It is an arithmetic number, because the mean of its divisors is an integer number (1714684225023).

Almost surely, 2^{11431213043405} is an apocalyptic number.

It is an amenable number.

11431213043405 is a deficient number, since it is larger than the sum of its proper divisors (2286260756779).

11431213043405 is a wasteful number, since it uses less digits than its factorization.

11431213043405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024687.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 11431213043405 its reverse (50434031213411), we get a palindrome (61865244256816).

The spelling of 11431213043405 in words is "eleven trillion, four hundred thirty-one billion, two hundred thirteen million, forty-three thousand, four hundred five".