1163166231 has 8 divisors (see below), whose sum is σ = 1642117104. Its totient is φ = 729829760.

The previous prime is 1163166229. The next prime is 1163166241. The reversal of 1163166231 is 1326613611.

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

It is a cyclic number.

It is not a de Polignac number, because 1163166231 - 2¹ = 1163166229 is a prime.

It is a super-2 number, since 2×1163166231² = 2705911361877490722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163166241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11403540 + ... + 11403641.

It is an arithmetic number, because the mean of its divisors is an integer number (205264638).

Almost surely, 2^1163166231 is an apocalyptic number.

1163166231 is a deficient number, since it is larger than the sum of its proper divisors (478950873).

1163166231 is a wasteful number, since it uses less digits than its factorization.

1163166231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22807201.

The product of its digits is 3888, while the sum is 30.

The square root of 1163166231 is about 34105.2229284607. Note that the first 3 decimals coincide. The cubic root of 1163166231 is about 1051.6726872230.

Adding to 1163166231 its reverse (1326613611), we get a palindrome (2489779842).

The spelling of 1163166231 in words is "one billion, one hundred sixty-three million, one hundred sixty-six thousand, two hundred thirty-one".