1140255531 has 12 divisors (see below), whose sum is σ = 1733722120. Its totient is φ = 720161280.

The previous prime is 1140255517. The next prime is 1140255563. The reversal of 1140255531 is 1355520411.

It is not a de Polignac number, because 1140255531 - 2⁹ = 1140255019 is a prime.

It is a super-2 number, since 2×1140255531² = 2600365351952183922, 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 = 1140255495 and 1140255504.

It is not an unprimeable number, because it can be changed into a prime (1140251531) 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 11 ways as a sum of consecutive naturals, for example, 3333910 + ... + 3334251.

Almost surely, 2^1140255531 is an apocalyptic number.

1140255531 is a deficient number, since it is larger than the sum of its proper divisors (593466589).

1140255531 is a wasteful number, since it uses less digits than its factorization.

1140255531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668186 (or 6668183 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1140255531 is about 33767.6699077683. The cubic root of 1140255531 is about 1044.7219733033.

Adding to 1140255531 its reverse (1355520411), we get a palindrome (2495775942).

The spelling of 1140255531 in words is "one billion, one hundred forty million, two hundred fifty-five thousand, five hundred thirty-one".