1306137223 has 4 divisors (see below), whose sum is σ = 1306211688. Its totient is φ = 1306062760.

The previous prime is 1306137199. The next prime is 1306137233. The reversal of 1306137223 is 3227316031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1306137223 - 2¹³ = 1306129031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1306137191 and 1306137200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306137233) 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, 5193 + ... + 51373.

It is an arithmetic number, because the mean of its divisors is an integer number (326552922).

Almost surely, 2^1306137223 is an apocalyptic number.

1306137223 is a deficient number, since it is larger than the sum of its proper divisors (74465).

1306137223 is an equidigital number, since it uses as much as digits as its factorization.

1306137223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74464.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 1306137223 is about 36140.5205136838. The cubic root of 1306137223 is about 1093.1076544929.

The spelling of 1306137223 in words is "one billion, three hundred six million, one hundred thirty-seven thousand, two hundred twenty-three".