315719 has 4 divisors (see below), whose sum is σ = 317280. Its totient is φ = 314160.

The previous prime is 315703. The next prime is 315739. The reversal of 315719 is 917513.

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

It is a cyclic number.

It is not a de Polignac number, because 315719 - 2⁴ = 315703 is a prime.

It is a super-2 number, since 2×315719² = 199356973922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315739) 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, 422 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (79320).

2³¹⁵⁷¹⁹ is an apocalyptic number.

315719 is a deficient number, since it is larger than the sum of its proper divisors (1561).

315719 is a wasteful number, since it uses less digits than its factorization.

315719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560.

The product of its digits is 945, while the sum is 26.

The square root of 315719 is about 561.8887790302. Note that the first 3 decimals coincide. The cubic root of 315719 is about 68.0926505222.

The spelling of 315719 in words is "three hundred fifteen thousand, seven hundred nineteen".