1161131336 has 16 divisors (see below), whose sum is σ = 2235962940. Its totient is φ = 564874560.

The previous prime is 1161131327. The next prime is 1161131347. The reversal of 1161131336 is 6331311611.

It can be written as a sum of positive squares in 2 ways, for example, as 1142034436 + 19096900 = 33794^2 + 4370^2 .

It is a super-2 number, since 2×1161131336² = 2696451958882289792, which contains 22 as substring.

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, 1961075 + ... + 1961666.

Almost surely, 2^1161131336 is an apocalyptic number.

It is an amenable number.

1161131336 is a deficient number, since it is larger than the sum of its proper divisors (1074831604).

1161131336 is a wasteful number, since it uses less digits than its factorization.

1161131336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3922784 (or 3922780 counting only the distinct ones).

The product of its digits is 972, while the sum is 26.

The square root of 1161131336 is about 34075.3772686378. The cubic root of 1161131336 is about 1051.0590481710.

Adding to 1161131336 its reverse (6331311611), we get a palindrome (7492442947).

The spelling of 1161131336 in words is "one billion, one hundred sixty-one million, one hundred thirty-one thousand, three hundred thirty-six".