1331100036 has 36 divisors (see below), whose sum is σ = 3845400832. Its totient is φ = 380314224.

The previous prime is 1331100013. The next prime is 1331100037. The reversal of 1331100036 is 6300011331.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1331099991 and 1331100018.

It is not an unprimeable number, because it can be changed into a prime (1331100037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2640820 + ... + 2641323.

Almost surely, 2^1331100036 is an apocalyptic number.

It is an amenable number.

1331100036 is an abundant number, since it is smaller than the sum of its proper divisors (2514300796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331100036 is a wasteful number, since it uses less digits than its factorization.

1331100036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282160 (or 5282155 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1331100036 is about 36484.2436676437. The cubic root of 1331100036 is about 1100.0275574363.

Adding to 1331100036 its reverse (6300011331), we get a palindrome (7631111367).

The spelling of 1331100036 in words is "one billion, three hundred thirty-one million, one hundred thousand, thirty-six".