313445 has 16 divisors (see below), whose sum is σ = 423360. Its totient is φ = 220800.

The previous prime is 313409. The next prime is 313471. The reversal of 313445 is 544313.

313445 = T₁₂₁ + T₁₂₂ + ... + T₁₅₃.

It is not a de Polignac number, because 313445 - 2⁶ = 313381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2186 + ... + 2324.

It is an arithmetic number, because the mean of its divisors is an integer number (26460).

2³¹³⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

313445 is a deficient number, since it is larger than the sum of its proper divisors (109915).

313445 is a wasteful number, since it uses less digits than its factorization.

313445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196.

The product of its digits is 720, while the sum is 20.

The square root of 313445 is about 559.8615900381. The cubic root of 313445 is about 67.9287749039.

Adding to 313445 its reverse (544313), we get a palindrome (857758).

The spelling of 313445 in words is "three hundred thirteen thousand, four hundred forty-five".