1306656103 has 4 divisors (see below), whose sum is σ = 1351713240. Its totient is φ = 1261598968.

The previous prime is 1306656079. The next prime is 1306656119. The reversal of 1306656103 is 3016566031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3016566031 = 809 ⋅3728759.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1306656103 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 (1306656203) 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, 22528525 + ... + 22528582.

It is an arithmetic number, because the mean of its divisors is an integer number (337928310).

Almost surely, 2^1306656103 is an apocalyptic number.

1306656103 is a deficient number, since it is larger than the sum of its proper divisors (45057137).

1306656103 is an equidigital number, since it uses as much as digits as its factorization.

1306656103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45057136.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 1306656103 is about 36147.6984467891. The cubic root of 1306656103 is about 1093.2523857402.

It can be divided in two parts, 13066 and 56103, that added together give a square (69169 = 263²).

The spelling of 1306656103 in words is "one billion, three hundred six million, six hundred fifty-six thousand, one hundred three".