1140031111 has 4 divisors (see below), whose sum is σ = 1140201712. Its totient is φ = 1139860512.

The previous prime is 1140031091. The next prime is 1140031127. The reversal of 1140031111 is 1111300411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1140031111 - 2²³ = 1131642503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1140031091 and 1140031100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140031181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74850 + ... + 88783.

It is an arithmetic number, because the mean of its divisors is an integer number (285050428).

Almost surely, 2^1140031111 is an apocalyptic number.

1140031111 is a deficient number, since it is larger than the sum of its proper divisors (170601).

1140031111 is an equidigital number, since it uses as much as digits as its factorization.

1140031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170600.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1140031111 is about 33764.3467432734. The cubic root of 1140031111 is about 1044.6534296356.

Adding to 1140031111 its reverse (1111300411), we get a palindrome (2251331522).

The spelling of 1140031111 in words is "one billion, one hundred forty million, thirty-one thousand, one hundred eleven".