7317131693 has 4 divisors (see below), whose sum is σ = 7319095548. Its totient is φ = 7315167840.

The previous prime is 7317131681. The next prime is 7317131699. The reversal of 7317131693 is 3961317137.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6329475364 + 987656329 = 79558^2 + 31427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7317131693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7317131693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7317131699) 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, 976328 + ... + 983793.

It is an arithmetic number, because the mean of its divisors is an integer number (1829773887).

Almost surely, 2^7317131693 is an apocalyptic number.

It is an amenable number.

7317131693 is a deficient number, since it is larger than the sum of its proper divisors (1963855).

7317131693 is a wasteful number, since it uses less digits than its factorization.

7317131693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963854.

The product of its digits is 71442, while the sum is 41.

The square root of 7317131693 is about 85540.2343520288. The cubic root of 7317131693 is about 1941.3937351610.

The spelling of 7317131693 in words is "seven billion, three hundred seventeen million, one hundred thirty-one thousand, six hundred ninety-three".