1131243063 has 8 divisors (see below), whose sum is σ = 1573903488. Its totient is φ = 721372344.

The previous prime is 1131243037. The next prime is 1131243067. The reversal of 1131243063 is 3603421311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131243063 - 2¹⁰ = 1131242039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131243067) 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 7 ways as a sum of consecutive naturals, for example, 8197345 + ... + 8197482.

It is an arithmetic number, because the mean of its divisors is an integer number (196737936).

Almost surely, 2^1131243063 is an apocalyptic number.

1131243063 is a deficient number, since it is larger than the sum of its proper divisors (442660425).

1131243063 is a wasteful number, since it uses less digits than its factorization.

1131243063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16394853.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1131243063 is about 33633.9569928963. The cubic root of 1131243063 is about 1041.9622295270.

Adding to 1131243063 its reverse (3603421311), we get a palindrome (4734664374).

The spelling of 1131243063 in words is "one billion, one hundred thirty-one million, two hundred forty-three thousand, sixty-three".