1331003103 has 8 divisors (see below), whose sum is σ = 1803764016. Its totient is φ = 872788800.

The previous prime is 1331003081. The next prime is 1331003119. The reversal of 1331003103 is 3013001331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1331003103 - 2¹⁸ = 1330740959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331003153) 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, 3636438 + ... + 3636803.

It is an arithmetic number, because the mean of its divisors is an integer number (225470502).

Almost surely, 2^1331003103 is an apocalyptic number.

1331003103 is a deficient number, since it is larger than the sum of its proper divisors (472760913).

1331003103 is an equidigital number, since it uses as much as digits as its factorization.

1331003103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7273305.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 1331003103 is about 36482.9152206893. The cubic root of 1331003103 is about 1100.0008548203. Note that the first 3 decimals are identical.

Adding to 1331003103 its reverse (3013001331), we get a palindrome (4344004434).

It can be divided in two parts, 133 and 1003103, that added together give a triangular number (1003236 = T₁₄₁₆).

The spelling of 1331003103 in words is "one billion, three hundred thirty-one million, three thousand, one hundred three".