313121346 has 16 divisors (see below), whose sum is σ = 641517408. Its totient is φ = 101828000.

The previous prime is 313121327. The next prime is 313121407. The reversal of 313121346 is 643121313.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636180 + ... + 636671.

It is an arithmetic number, because the mean of its divisors is an integer number (40094838).

Almost surely, 2^313121346 is an apocalyptic number.

313121346 is an abundant number, since it is smaller than the sum of its proper divisors (328396062).

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

313121346 is a wasteful number, since it uses less digits than its factorization.

313121346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272897.

The product of its digits is 1296, while the sum is 24.

The square root of 313121346 is about 17695.2351213540. The cubic root of 313121346 is about 679.0538643994.

Adding to 313121346 its reverse (643121313), we get a palindrome (956242659).

The spelling of 313121346 in words is "three hundred thirteen million, one hundred twenty-one thousand, three hundred forty-six".