1140312331 has 16 divisors (see below), whose sum is σ = 1217021760. Its totient is φ = 1066024960.

The previous prime is 1140312323. The next prime is 1140312353. The reversal of 1140312331 is 1332130411.

It is a cyclic number.

It is not a de Polignac number, because 1140312331 - 2³ = 1140312323 is a prime.

It is a super-2 number, since 2×1140312331² = 2600624424461307122, 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 = 1140312299 and 1140312308.

It is not an unprimeable number, because it can be changed into a prime (1140312311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340875 + ... + 344203.

It is an arithmetic number, because the mean of its divisors is an integer number (76063860).

Almost surely, 2^1140312331 is an apocalyptic number.

1140312331 is a deficient number, since it is larger than the sum of its proper divisors (76709429).

1140312331 is a wasteful number, since it uses less digits than its factorization.

1140312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1140312331 is about 33768.5109384468. The cubic root of 1140312331 is about 1044.7393200650.

Adding to 1140312331 its reverse (1332130411), we get a palindrome (2472442742).

The spelling of 1140312331 in words is "one billion, one hundred forty million, three hundred twelve thousand, three hundred thirty-one".