1111444131 has 8 divisors (see below), whose sum is σ = 1693629184. Its totient is φ = 635110920.

The previous prime is 1111444129. The next prime is 1111444181. The reversal of 1111444131 is 1314441111.

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

It is not a de Polignac number, because 1111444131 - 2¹ = 1111444129 is a prime.

It is a super-2 number, since 2×1111444131² = 2470616112668690322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 52925911 = 1111444131 / (1 + 1 + 1 + 1 + 4 + 4 + 4 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111444098 and 1111444107.

It is not an unprimeable number, because it can be changed into a prime (1111444181) 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, 26462935 + ... + 26462976.

It is an arithmetic number, because the mean of its divisors is an integer number (211703648).

Almost surely, 2^1111444131 is an apocalyptic number.

1111444131 is a deficient number, since it is larger than the sum of its proper divisors (582185053).

1111444131 is an equidigital number, since it uses as much as digits as its factorization.

1111444131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52925921.

The product of its digits is 192, while the sum is 21.

The square root of 1111444131 is about 33338.3282574277. The cubic root of 1111444131 is about 1035.8476353374.

Adding to 1111444131 its reverse (1314441111), we get a palindrome (2425885242).

The spelling of 1111444131 in words is "one billion, one hundred eleven million, four hundred forty-four thousand, one hundred thirty-one".