313171990 has 16 divisors (see below), whose sum is σ = 564420960. Its totient is φ = 125110720.

The previous prime is 313171973. The next prime is 313171997. The reversal of 313171990 is 99171313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313171997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11266 + ... + 27445.

It is an arithmetic number, because the mean of its divisors is an integer number (35276310).

Almost surely, 2^313171990 is an apocalyptic number.

313171990 is a deficient number, since it is larger than the sum of its proper divisors (251248970).

313171990 is a wasteful number, since it uses less digits than its factorization.

313171990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39527.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 313171990 is about 17696.6660701953. Note that the first 3 decimals coincide. The cubic root of 313171990 is about 679.0904723050.

The spelling of 313171990 in words is "three hundred thirteen million, one hundred seventy-one thousand, nine hundred ninety".