11234431134421 has 32 divisors (see below), whose sum is σ = 12838008193920. Its totient is φ = 9818613185920.

The previous prime is 11234431134419. The next prime is 11234431134457. The reversal of 11234431134421 is 12443113443211.

It is not a de Polignac number, because 11234431134421 - 2¹ = 11234431134419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11234432134421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8368986 + ... + 9618148.

It is an arithmetic number, because the mean of its divisors is an integer number (401187756060).

Almost surely, 2^{11234431134421} is an apocalyptic number.

11234431134421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11234431134421 is a deficient number, since it is larger than the sum of its proper divisors (1603577059499).

11234431134421 is a wasteful number, since it uses less digits than its factorization.

11234431134421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249458 (or 1249436 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

Adding to 11234431134421 its reverse (12443113443211), we get a palindrome (23677544577632).

It can be divided in two parts, 11 and 234431134421, that added together give a palindrome (234431134432).

The spelling of 11234431134421 in words is "eleven trillion, two hundred thirty-four billion, four hundred thirty-one million, one hundred thirty-four thousand, four hundred twenty-one".