317994388 has 6 divisors (see below), whose sum is σ = 556490186. Its totient is φ = 158997192.

The previous prime is 317994379. The next prime is 317994409. The reversal of 317994388 is 883499713.

It can be written as a sum of positive squares in only one way, i.e., 224640144 + 93354244 = 14988^2 + 9662^2 .

It is a super-2 number, since 2×317994388² = 202240861598989088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39749295 + ... + 39749302.

Almost surely, 2^317994388 is an apocalyptic number.

It is an amenable number.

317994388 is a deficient number, since it is larger than the sum of its proper divisors (238495798).

317994388 is a wasteful number, since it uses less digits than its factorization.

317994388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79498601 (or 79498599 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 317994388 is about 17832.3971467663. The cubic root of 317994388 is about 682.5584043907.

The spelling of 317994388 in words is "three hundred seventeen million, nine hundred ninety-four thousand, three hundred eighty-eight".