315445 has 16 divisors (see below), whose sum is σ = 427392. Its totient is φ = 221760.

The previous prime is 315437. The next prime is 315449. The reversal of 315445 is 544513.

It is not a de Polignac number, because 315445 - 2³ = 315437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1390 + ... + 1600.

It is an arithmetic number, because the mean of its divisors is an integer number (26712).

2³¹⁵⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

315445 is a deficient number, since it is larger than the sum of its proper divisors (111947).

315445 is a wasteful number, since it uses less digits than its factorization.

315445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 1200, while the sum is 22.

The square root of 315445 is about 561.6449056121. The cubic root of 315445 is about 68.0729465173.

Adding to 315445 its reverse (544513), we get a palindrome (859958).

It can be divided in two parts, 31 and 5445, that added together give a square (5476 = 74²).

The spelling of 315445 in words is "three hundred fifteen thousand, four hundred forty-five".