315722 has 16 divisors (see below), whose sum is σ = 525312. Its totient is φ = 141120.

The previous prime is 315703. The next prime is 315739. The reversal of 315722 is 227513.

It is a junction number, because it is equal to n+sod(n) for n = 315694 and 315703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2423 + ... + 2549.

It is an arithmetic number, because the mean of its divisors is an integer number (32832).

2³¹⁵⁷²² is an apocalyptic number.

315722 is a deficient number, since it is larger than the sum of its proper divisors (209590).

315722 is a wasteful number, since it uses less digits than its factorization.

315722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253.

The product of its digits is 420, while the sum is 20.

The square root of 315722 is about 561.8914485913. The cubic root of 315722 is about 68.0928661964.

Subtracting from 315722 its reverse (227513), we obtain a square (88209 = 297²).

The spelling of 315722 in words is "three hundred fifteen thousand, seven hundred twenty-two".