1131240466 has 4 divisors (see below), whose sum is σ = 1696860702. Its totient is φ = 565620232.

The previous prime is 1131240443. The next prime is 1131240511. The reversal of 1131240466 is 6640421311.

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

It can be written as a sum of positive squares in only one way, i.e., 1087614441 + 43626025 = 32979^2 + 6605^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282810115 + ... + 282810118.

Almost surely, 2^1131240466 is an apocalyptic number.

1131240466 is a deficient number, since it is larger than the sum of its proper divisors (565620236).

1131240466 is an equidigital number, since it uses as much as digits as its factorization.

1131240466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565620235.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1131240466 is about 33633.9183860578. The cubic root of 1131240466 is about 1041.9614321805.

Adding to 1131240466 its reverse (6640421311), we get a palindrome (7771661777).

The spelling of 1131240466 in words is "one billion, one hundred thirty-one million, two hundred forty thousand, four hundred sixty-six".