317206990 has 8 divisors (see below), whose sum is σ = 570972600. Its totient is φ = 126882792.

The previous prime is 317206987. The next prime is 317206991. The reversal of 317206990 is 99602713.

317206990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317206991) 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, 15860340 + ... + 15860359.

It is an arithmetic number, because the mean of its divisors is an integer number (71371575).

Almost surely, 2^317206990 is an apocalyptic number.

317206990 is a deficient number, since it is larger than the sum of its proper divisors (253765610).

317206990 is a wasteful number, since it uses less digits than its factorization.

317206990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31720706.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 317206990 is about 17810.3057244956. The cubic root of 317206990 is about 681.9945691469.

The spelling of 317206990 in words is "three hundred seventeen million, two hundred six thousand, nine hundred ninety".