316172081437 has 4 divisors (see below), whose sum is σ = 316641877180. Its totient is φ = 315702285696.

The previous prime is 316172081333. The next prime is 316172081527. The reversal of 316172081437 is 734180271613.

It is a happy number.

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 74082496761 + 242089584676 = 272181^2 + 492026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316172081437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 316172081393 and 316172081402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316172087437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234896862 + ... + 234898207.

It is an arithmetic number, because the mean of its divisors is an integer number (79160469295).

Almost surely, 2^316172081437 is an apocalyptic number.

It is an amenable number.

316172081437 is a deficient number, since it is larger than the sum of its proper divisors (469795743).

316172081437 is an equidigital number, since it uses as much as digits as its factorization.

316172081437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469795742.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 316172081437 in words is "three hundred sixteen billion, one hundred seventy-two million, eighty-one thousand, four hundred thirty-seven".