2231134440 has 64 divisors (see below), whose sum is σ = 6759711360. Its totient is φ = 589075200.

The previous prime is 2231134439. The next prime is 2231134441. The reversal of 2231134440 is 444311322.

It is an interprime number because it is at equal distance from previous prime (2231134439) and next prime (2231134441).

It is a super-3 number, since 3×2231134440³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2231134440.

It is not an unprimeable number, because it can be changed into a prime (2231134441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79924 + ... + 104163.

It is an arithmetic number, because the mean of its divisors is an integer number (105620490).

Almost surely, 2^2231134440 is an apocalyptic number.

2231134440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231134440 is an abundant number, since it is smaller than the sum of its proper divisors (4528576920).

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

2231134440 is a wasteful number, since it uses less digits than its factorization.

2231134440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184202 (or 184198 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2231134440 is about 47234.8858366356. The cubic root of 2231134440 is about 1306.6980611065.

Adding to 2231134440 its reverse (444311322), we get a palindrome (2675445762).

The spelling of 2231134440 in words is "two billion, two hundred thirty-one million, one hundred thirty-four thousand, four hundred forty".