313216340 has 24 divisors (see below), whose sum is σ = 658930272. Its totient is φ = 125062560.

The previous prime is 313216339. The next prime is 313216361. The reversal of 313216340 is 43612313.

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, 2294 + ... + 25133.

It is an arithmetic number, because the mean of its divisors is an integer number (27455428).

Almost surely, 2^313216340 is an apocalyptic number.

It is an amenable number.

313216340 is an abundant number, since it is smaller than the sum of its proper divisors (345713932).

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

313216340 is a wasteful number, since it uses less digits than its factorization.

313216340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28007 (or 28005 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 313216340 is about 17697.9190867175. The cubic root of 313216340 is about 679.1225273651.

Adding to 313216340 its reverse (43612313), we get a palindrome (356828653).

The spelling of 313216340 in words is "three hundred thirteen million, two hundred sixteen thousand, three hundred forty".