1331303111 has 8 divisors (see below), whose sum is σ = 1334995200. Its totient is φ = 1327617720.

The previous prime is 1331303093. The next prime is 1331303137. The reversal of 1331303111 is 1113031331.

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 1331303111 - 2⁶ = 1331303047 is a prime.

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 1331303111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331303161) 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, 1056800 + ... + 1058058.

It is an arithmetic number, because the mean of its divisors is an integer number (166874400).

Almost surely, 2^1331303111 is an apocalyptic number.

1331303111 is a deficient number, since it is larger than the sum of its proper divisors (3692089).

1331303111 is a wasteful number, since it uses less digits than its factorization.

1331303111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1331303111 is about 36487.0266122083. The cubic root of 1331303111 is about 1100.0834953150.

Adding to 1331303111 its reverse (1113031331), we get a palindrome (2444334442).

The spelling of 1331303111 in words is "one billion, three hundred thirty-one million, three hundred three thousand, one hundred eleven".