313785138 has 8 divisors (see below), whose sum is σ = 627570288. Its totient is φ = 104595044.

The previous prime is 313785119. The next prime is 313785163. The reversal of 313785138 is 831587313.

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

313785138 is an admirable number.

It is a super-2 number, since 2×313785138² = 196922225659358088, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 313785096 and 313785105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26148756 + ... + 26148767.

It is an arithmetic number, because the mean of its divisors is an integer number (78446286).

Almost surely, 2^313785138 is an apocalyptic number.

313785138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313785138 is a wasteful number, since it uses less digits than its factorization.

313785138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52297528.

The product of its digits is 60480, while the sum is 39.

The square root of 313785138 is about 17713.9814271101. The cubic root of 313785138 is about 679.5333721950.

The spelling of 313785138 in words is "three hundred thirteen million, seven hundred eighty-five thousand, one hundred thirty-eight".