313120340 has 24 divisors (see below), whose sum is σ = 708134280. Its totient is φ = 115613568.

The previous prime is 313120333. The next prime is 313120351. The reversal of 313120340 is 43021313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69822736 + 243297604 = 8356^2 + 15598^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601895 + ... + 602414.

It is an arithmetic number, because the mean of its divisors is an integer number (29505595).

Almost surely, 2^313120340 is an apocalyptic number.

It is an amenable number.

313120340 is an abundant number, since it is smaller than the sum of its proper divisors (395013940).

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

313120340 is a wasteful number, since it uses less digits than its factorization.

313120340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204331 (or 1204329 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 313120340 is about 17695.2066955998. The cubic root of 313120340 is about 679.0531371745.

Adding to 313120340 its reverse (43021313), we get a palindrome (356141653).

The spelling of 313120340 in words is "three hundred thirteen million, one hundred twenty thousand, three hundred forty".