1373727317 has 4 divisors (see below), whose sum is σ = 1378834380. Its totient is φ = 1368620256.

The previous prime is 1373727301. The next prime is 1373727323. The reversal of 1373727317 is 7137273731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7137273731 = 7 ⋅1019610533.

It can be written as a sum of positive squares in 2 ways, for example, as 268763236 + 1104964081 = 16394^2 + 33241^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373727317 - 2⁴ = 1373727301 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 (1373727367) 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, 2553128 + ... + 2553665.

It is an arithmetic number, because the mean of its divisors is an integer number (344708595).

Almost surely, 2^1373727317 is an apocalyptic number.

It is an amenable number.

1373727317 is a deficient number, since it is larger than the sum of its proper divisors (5107063).

1373727317 is an equidigital number, since it uses as much as digits as its factorization.

1373727317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5107062.

The product of its digits is 129654, while the sum is 41.

The square root of 1373727317 is about 37063.8276085997. The cubic root of 1373727317 is about 1111.6468579670.

The spelling of 1373727317 in words is "one billion, three hundred seventy-three million, seven hundred twenty-seven thousand, three hundred seventeen".