1113144231 has 8 divisors (see below), whose sum is σ = 1506344704. Its totient is φ = 731019960.

The previous prime is 1113144217. The next prime is 1113144247. The reversal of 1113144231 is 1324413111.

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

It is not a de Polignac number, because 1113144231 - 2¹³ = 1113136039 is a prime.

It is a super-2 number, since 2×1113144231² = 2478180158017162722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113144198 and 1113144207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113144281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2768815 + ... + 2769216.

It is an arithmetic number, because the mean of its divisors is an integer number (188293088).

Almost surely, 2^1113144231 is an apocalyptic number.

1113144231 is a deficient number, since it is larger than the sum of its proper divisors (393200473).

1113144231 is an equidigital number, since it uses as much as digits as its factorization.

1113144231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538101.

The product of its digits is 288, while the sum is 21.

The square root of 1113144231 is about 33363.8161935951. The cubic root of 1113144231 is about 1036.3755213437.

Adding to 1113144231 its reverse (1324413111), we get a palindrome (2437557342).

The spelling of 1113144231 in words is "one billion, one hundred thirteen million, one hundred forty-four thousand, two hundred thirty-one".