316721740 has 12 divisors (see below), whose sum is σ = 665115696. Its totient is φ = 126688688.

The previous prime is 316721689. The next prime is 316721749. The reversal of 316721740 is 47127613.

It is not an unprimeable number, because it can be changed into a prime (316721749) 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, 7918024 + ... + 7918063.

It is an arithmetic number, because the mean of its divisors is an integer number (55426308).

Almost surely, 2^316721740 is an apocalyptic number.

It is an amenable number.

316721740 is an abundant number, since it is smaller than the sum of its proper divisors (348393956).

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

316721740 is a wasteful number, since it uses less digits than its factorization.

316721740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15836096 (or 15836094 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 316721740 is about 17796.6777798554. The cubic root of 316721740 is about 681.6466293995.

The spelling of 316721740 in words is "three hundred sixteen million, seven hundred twenty-one thousand, seven hundred forty".