317899990 has 32 divisors (see below), whose sum is σ = 580595040. Its totient is φ = 125309184.

The previous prime is 317899987. The next prime is 317899991. The reversal of 317899990 is 99998713.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317899991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486504 + ... + 487156.

It is an arithmetic number, because the mean of its divisors is an integer number (18143595).

Almost surely, 2^317899990 is an apocalyptic number.

317899990 is a deficient number, since it is larger than the sum of its proper divisors (262695050).

317899990 is a wasteful number, since it uses less digits than its factorization.

317899990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The square root of 317899990 is about 17829.7501384624. The cubic root of 317899990 is about 682.4908575750.

It can be divided in two parts, 3178999 and 90, that added together give a square (3179089 = 1783²).

The spelling of 317899990 in words is "three hundred seventeen million, eight hundred ninety-nine thousand, nine hundred ninety".