1331110001 has 4 divisors (see below), whose sum is σ = 1433503092. Its totient is φ = 1228716912.

The previous prime is 1331109991. The next prime is 1331110043. The reversal of 1331110001 is 1000111331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1000111331 = 2203 ⋅453977.

It can be written as a sum of positive squares in 2 ways, for example, as 245736976 + 1085373025 = 15676^2 + 32945^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331110001 - 2⁶ = 1331109937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1331110091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51196526 + ... + 51196551.

It is an arithmetic number, because the mean of its divisors is an integer number (358375773).

Almost surely, 2^1331110001 is an apocalyptic number.

It is an amenable number.

1331110001 is a deficient number, since it is larger than the sum of its proper divisors (102393091).

1331110001 is a wasteful number, since it uses less digits than its factorization.

1331110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102393090.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 1331110001 is about 36484.3802331902. The cubic root of 1331110001 is about 1100.0303024710.

Adding to 1331110001 its reverse (1000111331), we get a palindrome (2331221332).

The spelling of 1331110001 in words is "one billion, three hundred thirty-one million, one hundred ten thousand, one".