1161331016 has 16 divisors (see below), whose sum is σ = 2180239740. Its totient is φ = 579933760.

The previous prime is 1161331001. The next prime is 1161331049. The reversal of 1161331016 is 6101331611.

It can be written as a sum of positive squares in 2 ways, for example, as 1105828516 + 55502500 = 33254^2 + 7450^2 .

It is a super-3 number, since 3×1161331016³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1161330982 and 1161331000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84695 + ... + 97446.

Almost surely, 2^1161331016 is an apocalyptic number.

It is an amenable number.

1161331016 is a deficient number, since it is larger than the sum of its proper divisors (1018908724).

1161331016 is a wasteful number, since it uses less digits than its factorization.

1161331016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182944 (or 182940 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1161331016 is about 34078.3071175785. The cubic root of 1161331016 is about 1051.1192949994.

Adding to 1161331016 its reverse (6101331611), we get a palindrome (7262662627).

The spelling of 1161331016 in words is "one billion, one hundred sixty-one million, three hundred thirty-one thousand, sixteen".