313438 has 4 divisors (see below), whose sum is σ = 470160. Its totient is φ = 156718.

The previous prime is 313409. The next prime is 313471. The reversal of 313438 is 834313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834313 = 37 ⋅22549.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78358 + ... + 78361.

It is an arithmetic number, because the mean of its divisors is an integer number (117540).

2³¹³⁴³⁸ is an apocalyptic number.

313438 is a deficient number, since it is larger than the sum of its proper divisors (156722).

313438 is a wasteful number, since it uses less digits than its factorization.

313438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156721.

The product of its digits is 864, while the sum is 22.

The square root of 313438 is about 559.8553384581. The cubic root of 313438 is about 67.9282692277.

The spelling of 313438 in words is "three hundred thirteen thousand, four hundred thirty-eight".