11431134 has 48 divisors (see below), whose sum is σ = 29103984. Its totient is φ = 3196800.

The previous prime is 11431129. The next prime is 11431139. The reversal of 11431134 is 43113411.

It is an interprime number because it is at equal distance from previous prime (11431129) and next prime (11431139).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354 + ... + 4794.

It is an arithmetic number, because the mean of its divisors is an integer number (606333).

Almost surely, 2^11431134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11431134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14551992).

11431134 is an abundant number, since it is smaller than the sum of its proper divisors (17672850).

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

11431134 is a wasteful number, since it uses less digits than its factorization.

11431134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473 (or 4470 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 11431134 is about 3380.9960070961. The cubic root of 11431134 is about 225.2664103593.

Adding to 11431134 its reverse (43113411), we get a palindrome (54544545).

It can be divided in two parts, 11 and 431134, that multiplied together give a palindrome (4742474).

The spelling of 11431134 in words is "eleven million, four hundred thirty-one thousand, one hundred thirty-four".