1312726103 has 4 divisors (see below), whose sum is σ = 1413705048. Its totient is φ = 1211747160.

The previous prime is 1312726099. The next prime is 1312726117. The reversal of 1312726103 is 3016272131.

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

It is not a de Polignac number, because 1312726103 - 2² = 1312726099 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 (1312726133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50489453 + ... + 50489478.

It is an arithmetic number, because the mean of its divisors is an integer number (353426262).

Almost surely, 2^1312726103 is an apocalyptic number.

1312726103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1312726103 is a deficient number, since it is larger than the sum of its proper divisors (100978945).

1312726103 is a wasteful number, since it uses less digits than its factorization.

1312726103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100978944.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1312726103 is about 36231.5622489564. The cubic root of 1312726103 is about 1094.9426526266.

Adding to 1312726103 its reverse (3016272131), we get a palindrome (4328998234).

The spelling of 1312726103 in words is "one billion, three hundred twelve million, seven hundred twenty-six thousand, one hundred three".