11431431134311 has 4 divisors (see below), whose sum is σ = 11432573487792. Its totient is φ = 11430288780832.

The previous prime is 11431431134303. The next prime is 11431431134327. The reversal of 11431431134311 is 11343113413411.

It is a happy number.

11431431134311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11431431134311 - 2³ = 11431431134303 is a prime.

It is a super-2 number, since 2×11431431134311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431431134381) 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, 571161730 + ... + 571181743.

It is an arithmetic number, because the mean of its divisors is an integer number (2858143371948).

Almost surely, 2^{11431431134311} is an apocalyptic number.

11431431134311 is a deficient number, since it is larger than the sum of its proper divisors (1142353481).

11431431134311 is a wasteful number, since it uses less digits than its factorization.

11431431134311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142353480.

The product of its digits is 5184, while the sum is 31.

Adding to 11431431134311 its reverse (11343113413411), we get a palindrome (22774544547722).

The spelling of 11431431134311 in words is "eleven trillion, four hundred thirty-one billion, four hundred thirty-one million, one hundred thirty-four thousand, three hundred eleven".