313304240 has 20 divisors (see below), whose sum is σ = 728432544. Its totient is φ = 125321664.

The previous prime is 313304227. The next prime is 313304263. The reversal of 313304240 is 42403313.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1958072 + ... + 1958231.

Almost surely, 2^313304240 is an apocalyptic number.

It is an amenable number.

313304240 is an abundant number, since it is smaller than the sum of its proper divisors (415128304).

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

313304240 is a wasteful number, since it uses less digits than its factorization.

313304240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916316 (or 3916310 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 313304240 is about 17700.4022553161. The cubic root of 313304240 is about 679.1860503248.

Adding to 313304240 its reverse (42403313), we get a palindrome (355707553).

The spelling of 313304240 in words is "three hundred thirteen million, three hundred four thousand, two hundred forty".