1311123003 has 8 divisors (see below), whose sum is σ = 1749285888. Its totient is φ = 873521064.

The previous prime is 1311123001. The next prime is 1311123007. The reversal of 1311123003 is 3003211131.

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

It is not a de Polignac number, because 1311123003 - 2¹ = 1311123001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311123001) 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, 134751 + ... + 144152.

It is an arithmetic number, because the mean of its divisors is an integer number (218660736).

Almost surely, 2^1311123003 is an apocalyptic number.

1311123003 is a deficient number, since it is larger than the sum of its proper divisors (438162885).

1311123003 is a wasteful number, since it uses less digits than its factorization.

1311123003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280473.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1311123003 is about 36209.4325141944. The cubic root of 1311123003 is about 1094.4967567228.

Adding to 1311123003 its reverse (3003211131), we get a palindrome (4314334134).

The spelling of 1311123003 in words is "one billion, three hundred eleven million, one hundred twenty-three thousand, three".