1163613331 has 8 divisors (see below), whose sum is σ = 1237590144. Its totient is φ = 1090250880.

The previous prime is 1163613329. The next prime is 1163613377. The reversal of 1163613331 is 1333163611.

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 1163613331 - 2¹ = 1163613329 is a prime.

It is a super-3 number, since 3×1163613331³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1163613331.

It is not an unprimeable number, because it can be changed into a prime (1163613301) 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, 149680 + ... + 157261.

It is an arithmetic number, because the mean of its divisors is an integer number (154698768).

Almost surely, 2^1163613331 is an apocalyptic number.

1163613331 is a deficient number, since it is larger than the sum of its proper divisors (73976813).

1163613331 is a wasteful number, since it uses less digits than its factorization.

1163613331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307181.

The product of its digits is 2916, while the sum is 28.

The square root of 1163613331 is about 34111.7770132252. Note that the first 3 decimals coincide. The cubic root of 1163613331 is about 1051.8074179298.

Adding to 1163613331 its reverse (1333163611), we get a palindrome (2496776942).

The spelling of 1163613331 in words is "one billion, one hundred sixty-three million, six hundred thirteen thousand, three hundred thirty-one".