1311043103 has 8 divisors (see below), whose sum is σ = 1362422400. Its totient is φ = 1260231840.

The previous prime is 1311043099. The next prime is 1311043117. The reversal of 1311043103 is 3013401131.

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

It is not a de Polignac number, because 1311043103 - 2² = 1311043099 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 (1311043003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137300 + ... + 146537.

It is an arithmetic number, because the mean of its divisors is an integer number (170302800).

Almost surely, 2^1311043103 is an apocalyptic number.

1311043103 is a deficient number, since it is larger than the sum of its proper divisors (51379297).

1311043103 is a wasteful number, since it uses less digits than its factorization.

1311043103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284017.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1311043103 is about 36208.3291937090. The cubic root of 1311043103 is about 1094.4745233480.

Adding to 1311043103 its reverse (3013401131), we get a palindrome (4324444234).

The spelling of 1311043103 in words is "one billion, three hundred eleven million, forty-three thousand, one hundred three".