1133631473 has 4 divisors (see below), whose sum is σ = 1220833908. Its totient is φ = 1046429040.

The previous prime is 1133631463. The next prime is 1133631479. The reversal of 1133631473 is 3741363311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 550747024 + 582884449 = 23468^2 + 24143^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133631473 - 2²⁶ = 1066522609 is a prime.

It is a super-2 number, since 2×1133631473² = 2570240633152299458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1133631479) 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 3 ways as a sum of consecutive naturals, for example, 43601198 + ... + 43601223.

It is an arithmetic number, because the mean of its divisors is an integer number (305208477).

Almost surely, 2^1133631473 is an apocalyptic number.

1133631473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1133631473 is a deficient number, since it is larger than the sum of its proper divisors (87202435).

1133631473 is an equidigital number, since it uses as much as digits as its factorization.

1133631473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87202434.

The product of its digits is 13608, while the sum is 32.

The square root of 1133631473 is about 33669.4442039069. Note that the first 3 decimals coincide. The cubic root of 1133631473 is about 1042.6950174109.

Adding to 1133631473 its reverse (3741363311), we get a palindrome (4874994784).

The spelling of 1133631473 in words is "one billion, one hundred thirty-three million, six hundred thirty-one thousand, four hundred seventy-three".