313050728 has 8 divisors (see below), whose sum is σ = 586970130. Its totient is φ = 156525360.

The previous prime is 313050721. The next prime is 313050757. The reversal of 313050728 is 827050313.

It can be written as a sum of positive squares in only one way, i.e., 259789924 + 53260804 = 16118^2 + 7298^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 313050728.

It is not an unprimeable number, because it can be changed into a prime (313050721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19565663 + ... + 19565678.

Almost surely, 2^313050728 is an apocalyptic number.

It is an amenable number.

313050728 is a deficient number, since it is larger than the sum of its proper divisors (273919402).

313050728 is a wasteful number, since it uses less digits than its factorization.

313050728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39131347 (or 39131343 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 313050728 is about 17693.2396129143. The cubic root of 313050728 is about 679.0028117412.

The spelling of 313050728 in words is "three hundred thirteen million, fifty thousand, seven hundred twenty-eight".