1163531043 has 6 divisors (see below), whose sum is σ = 1680655964. Its totient is φ = 775687356.

The previous prime is 1163531041. The next prime is 1163531071. The reversal of 1163531043 is 3401353611.

1163531043 is a `hidden beast` number, since 11 + 635 + 3 + 10 + 4 + 3 = 666.

It is not a de Polignac number, because 1163531043 - 2¹ = 1163531041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1163530998 and 1163531016.

It is not an unprimeable number, because it can be changed into a prime (1163531041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64640605 + ... + 64640622.

Almost surely, 2^1163531043 is an apocalyptic number.

1163531043 is a deficient number, since it is larger than the sum of its proper divisors (517124921).

1163531043 is a wasteful number, since it uses less digits than its factorization.

1163531043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129281233 (or 129281230 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 1163531043 is about 34110.5708395506. The cubic root of 1163531043 is about 1051.7826235625.

Adding to 1163531043 its reverse (3401353611), we get a palindrome (4564884654).

The spelling of 1163531043 in words is "one billion, one hundred sixty-three million, five hundred thirty-one thousand, forty-three".