313688338 has 4 divisors (see below), whose sum is σ = 470532510. Its totient is φ = 156844168.

The previous prime is 313688317. The next prime is 313688351. The reversal of 313688338 is 833886313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 833886313 = 13 ⋅64145101.

It can be written as a sum of positive squares in only one way, i.e., 288558169 + 25130169 = 16987^2 + 5013^2 .

It is a junction number, because it is equal to n+sod(n) for n = 313688294 and 313688303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78422083 + ... + 78422086.

Almost surely, 2^313688338 is an apocalyptic number.

313688338 is a deficient number, since it is larger than the sum of its proper divisors (156844172).

313688338 is a wasteful number, since it uses less digits than its factorization.

313688338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156844171.

The product of its digits is 248832, while the sum is 43.

The square root of 313688338 is about 17711.2489113557. The cubic root of 313688338 is about 679.4634882865.

The spelling of 313688338 in words is "three hundred thirteen million, six hundred eighty-eight thousand, three hundred thirty-eight".