313121022 has 16 divisors (see below), whose sum is σ = 626550672. Its totient is φ = 104322240.

The previous prime is 313120981. The next prime is 313121041. The reversal of 313121022 is 220121313.

It is a junction number, because it is equal to n+sod(n) for n = 313120992 and 313121010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1578 + ... + 25074.

It is an arithmetic number, because the mean of its divisors is an integer number (39159417).

Almost surely, 2^313121022 is an apocalyptic number.

313121022 is an abundant number, since it is smaller than the sum of its proper divisors (313429650).

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

313121022 is a wasteful number, since it uses less digits than its factorization.

313121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25723.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 313121022 is about 17695.2259663447. The cubic root of 313121022 is about 679.0536301840.

Adding to 313121022 its reverse (220121313), we get a palindrome (533242335).

The spelling of 313121022 in words is "three hundred thirteen million, one hundred twenty-one thousand, twenty-two".