1312103043 has 14 divisors (see below), whose sum is σ = 1967255724. Its totient is φ = 874734876.

The previous prime is 1312103017. The next prime is 1312103047. The reversal of 1312103043 is 3403012131.

It is not a de Polignac number, because 1312103043 - 2¹⁷ = 1311971971 is a prime.

It is a super-2 number, since 2×1312103043² = 3443228790899719698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312103047) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 899205 + ... + 900662.

It is an arithmetic number, because the mean of its divisors is an integer number (140518266).

Almost surely, 2^1312103043 is an apocalyptic number.

1312103043 is a deficient number, since it is larger than the sum of its proper divisors (655152681).

1312103043 is an frugal number, since it uses more digits than its factorization.

1312103043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799885 (or 1799870 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1312103043 is about 36222.9629240900. The cubic root of 1312103043 is about 1094.7693941102.

Adding to 1312103043 its reverse (3403012131), we get a palindrome (4715115174).

The spelling of 1312103043 in words is "one billion, three hundred twelve million, one hundred three thousand, forty-three".