319913057 has 4 divisors (see below), whose sum is σ = 322744260. Its totient is φ = 317081856.

The previous prime is 319913047. The next prime is 319913071. The reversal of 319913057 is 750319913.

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 71503936 + 248409121 = 8456^2 + 15761^2 .

It is a cyclic number.

It is not a de Polignac number, because 319913057 - 2¹² = 319908961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 319913057.

It is not an unprimeable number, because it can be changed into a prime (319913047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415432 + ... + 1415657.

It is an arithmetic number, because the mean of its divisors is an integer number (80686065).

Almost surely, 2^319913057 is an apocalyptic number.

It is an amenable number.

319913057 is a deficient number, since it is larger than the sum of its proper divisors (2831203).

319913057 is a wasteful number, since it uses less digits than its factorization.

319913057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831202.

The product of its (nonzero) digits is 25515, while the sum is 38.

The square root of 319913057 is about 17886.1135241841. The cubic root of 319913057 is about 683.9284270435.

The spelling of 319913057 in words is "three hundred nineteen million, nine hundred thirteen thousand, fifty-seven".