1331001103 has 4 divisors (see below), whose sum is σ = 1331715880. Its totient is φ = 1330286328.

The previous prime is 1331001101. The next prime is 1331001121. The reversal of 1331001103 is 3011001331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1331001103 - 2¹ = 1331001101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331001101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354588 + ... + 358321.

It is an arithmetic number, because the mean of its divisors is an integer number (332928970).

Almost surely, 2^1331001103 is an apocalyptic number.

1331001103 is a deficient number, since it is larger than the sum of its proper divisors (714777).

1331001103 is an equidigital number, since it uses as much as digits as its factorization.

1331001103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714776.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 1331001103 is about 36482.8878105887. The cubic root of 1331001103 is about 1100.0003038567. Note that the first 3 decimals are identical.

Adding to 1331001103 its reverse (3011001331), we get a palindrome (4342002434).

The spelling of 1331001103 in words is "one billion, three hundred thirty-one million, one thousand, one hundred three".