313240240 has 20 divisors (see below), whose sum is σ = 728283744. Its totient is φ = 125296064.

The previous prime is 313240211. The next prime is 313240241. The reversal of 313240240 is 42042313.

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

It is not an unprimeable number, because it can be changed into a prime (313240241) 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, 1957672 + ... + 1957831.

Almost surely, 2^313240240 is an apocalyptic number.

It is an amenable number.

313240240 is an abundant number, since it is smaller than the sum of its proper divisors (415043504).

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

313240240 is a wasteful number, since it uses less digits than its factorization.

313240240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915516 (or 3915510 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 313240240 is about 17698.5942944630. The cubic root of 313240240 is about 679.1398004269.

Adding to 313240240 its reverse (42042313), we get a palindrome (355282553).

The spelling of 313240240 in words is "three hundred thirteen million, two hundred forty thousand, two hundred forty".