313138 has 8 divisors (see below), whose sum is σ = 536832. Its totient is φ = 134196.

The previous prime is 313133. The next prime is 313147. The reversal of 313138 is 831313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (313133) 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, 11170 + ... + 11197.

It is an arithmetic number, because the mean of its divisors is an integer number (67104).

2³¹³¹³⁸ is an apocalyptic number.

313138 is a deficient number, since it is larger than the sum of its proper divisors (223694).

313138 is a wasteful number, since it uses less digits than its factorization.

313138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22376.

The product of its digits is 216, while the sum is 19.

The square root of 313138 is about 559.5873479628. The cubic root of 313138 is about 67.9065903143.

The spelling of 313138 in words is "three hundred thirteen thousand, one hundred thirty-eight".